Code Geass's first season. Sunrise was wary of trusting a full series to director / co-creator Goro Taniguchi, thanks to his reputation for perfectionism and his other quirks, so he was only handed 25 episodes to begin with. The staff often had to piggyback off of other parts of the studio that were working at the same time (for example, the Geass staff didn't even have their own photocopier) and the writers were only three or four episodes ahead of the broadcast, about half the "buffer" that most series have. When the series became a runaway success, things went much better, but fans tend to blame the series' being split in half for the perceived drop in quality in the second half.
The Dream Machine, the final movie of the lateSatoshi Kon, has experienced its share of trouble, having gone from production into Development Hell, back into production only to fall back into development hell. First Kon's death from pancreatic cancer put the film on hold to determine the next course of action. Kon's widow and Studio Madhouse's Masao Maruyama said they would finish the film and production resumed. However, at Otakon 2011, Maruyama reported the movie has been put on hold due to financial difficulties. Maruyama is still determined to finish the film eventually, with about 600 shots out of 1500 had been animated at that point.
The Fruits Basket anime was full of this, as Natsuki Takaya not only was more involved than other authors in it, but she had huge Creative Differences with the director Akitarou Daichi. This is cited as the reason why there is no second season, despite the series' popularity and its open ending.
Zeta Gundam, which suffered fewer financial hardships than the original, but both the TV series and its Compilation Movies rather infamously suffered complications as a result of the romantic blunders of various men involved in production with at least three voice actresses. Most infamous of which was the legendary feud between the Prima Donna Director and scriptwriter Yoshiyuki Tomino and equally self-important mecha designer Mamoru Nagano. It became doubly notorious because not only both men were feuding over the Beltorchika Irma's voice actress Maria Kawamuranote Nagano won and they still seem to be Happily Married., but over Creative Differences as well.note Nagano routinely hated Tomino's style and the direction where he was taking the show, up to the point that The Five Star Stories basically started as his Start My Own towards their other collaboration, Heavy Metal L Gaim.
Mobile Suit Gundam SEED Destiny also suffered this, partly because of head writer Chiaki Morosawa's battle with cancer during production, which resulted in her turning in scripts in late, which necessitated the numerous clip shows throughout the series. Secondly, although Shinn was supposed to the main character of the series, Kira was thrust back into the spotlight from episode 39 onwards, because of his popularity with the Japanese audience. Finally, there was director Mitsuo Fukuda being demanding on the voice actors on the way how they're supposed to to be portrayed (specifically, Naomi Shindo [the voice of Cagalli] and Maaya Sakamoto [the voice of Lunamaria]). This was confirmed by Rie Tanaka (the voice of Lacus and Meer) at her 2008 New York Anime Festival appearance, as well as Kenichi Suzumura (the voice of Shinn) in one of his Twitter posts.
Hols: Prince of the Sun was being made when Toei was restructuring itself to focus more on cheaper productions over lavish animations, and when its animators were starting to unionise. By coincidence, most of the aspiring, "troublesome" pro-union animators were assigned to work at the studio focusing on lavish animations, one of which was Hols. Originally intended to be a two-hour epic, the film was cut down to just 80 minutes as it exceeded its then-standard eight-month production period. When the film was finished, Toei did very little advertising and gave it a theatrical run of only ten days. At the end of it all, Isao Takahata was demoted, told he would never direct again, and Hols became an influential classic widely hailed as one of the best anime ever created.
Hyouge Mono had a few cases of some behind the scenes drama. It started with the band member of cro-magnon which co-composed the music and wrote the theme song getting arrested on a drug charge suspicion then the original author and the editorial staff walking off the project and asking for a credit change from Original Creator to Original Concept.
Lost Universe is a notorious case. The show's budget was already low, but a studio fire resulted in lots of work from the first few episodes destroyed. They had to be reanimated on an even lower budget by a South Korean studio while the rest of the show resumed production. This all occurring during a recession. One episode looked so bad on TV, that it had to be almost entirely re-animated for home video and re-runs.
For a long time, Mahou Sensei Negima! looked like a happy subversion. Ken Akamatsu wanted to do a shounen-action series from the start, but his producers wanted a harem show like his extremely popular Love Hina series. Akamatsu faked a harem series, using the first two volumes to lay down characterization, then slowly segue into the fighter series he wanted from the start. This resulted in an extremely intelligent and popular series known for its Amazon Brigade and ridiculously badass ten-year old protagonist. However, some three hundred chapters later, the executives tried to take the rights to the series away from him. He responded by ending the series abruptly, with a carefully crafted final chapter that managed use the "Where Are They Now?" Epilogue to make sure no one else could use his series. It remains to be seen if there will be any more releases filling in the unanswered questions.
Super Dimension Fortress Macross had shades of this trope. Originally envisioned for 48 episodes when the show was first greenlit, one of the financial backers went out of business, forcing a cut to 23 episodes when a new backer was found but did not have the money to fund the original 48. But the show was a hit upon premiere. And so, to bump the episode count up, they brought in legendary production company Tatsunoko. They foisted upon Studio Nue a host of questionable farm studios who brought in Off Model work, and even at one point managed to get a nearly-completed episode left on a train, nearly forcing a complete redo of the entire episode. And then, the fact that Macross was a hit and the interesting financial situation between Big West and Tatsunoko caused the production to be troubled long after the last episode went off the air. Even the title was due to Executive Meddling, as one of the producers, an admirer of Shakespeare, wanted the show to be called Macbeth, and had to be negotiated down to Macross as a compromise.
American fans were thrilled when Funimation got a hold of the 3rd Tenchi Muyo! OVA series. However, Funimation screwed up the contract and only got the rights for the first three episodes. It took a year to renegotiate for the other four episodes and get them out, barely averting a case of The Other Darrin when voice actor Bob Papenbrookpassed away soon after the release of the series.
This trope already occured when they got back the entire voice cast... except Ryoko, arguably the most popular character in the show. While the details of what happened are kept private, her original voice actress, Petrea Burchard, simple said "we just couldn't work it out." This change remains one of the more controversial aspects of the OVA.
The original DiC/Cloverway English dub of Sailor Moon deserves it's own place on the list. There's a reason it's the only English anime dub with an entire book written about it's production.
The show was licensed by DiC following a lengthy bidding war with Toon Makers who wanted to remake the show entirely. Once they did finally get it, they didn't know what to do with it since they mistakenly assumed they were only distributing it in North America and that an English-language adaptation was already produced. Due to their lack-of-knowledge of Japanese animation, Carl Macek was originally hired to write the adaptation, but was fired early in production due to Creative Differences with Andy Heyward (DiC's then-CEO). Fred Ladd (a veteran of English anime dubs, with experience going back to Astro Boy and Kimba the White Lion) was then hired.
On the recording side of things, Optimum Productions, a Toronto-based dubbing company, was selected to record the dub, however they ran into issues early on. Tracey Moore, the original ADR director and voice actress for Sailor Moon, quit after 13 episodes due to stressful Creative Differences and was replaced with Roland Parliament as director and Terri Hawkes as voice actress (also, Rino Romano quit his role of Tuxedo Mask around this time as well). Production was so far behind schedule, Hawkes began recording the night she was cast and ended up recording entire episodes in one take. Parliament worked long hours into the night, often slept at the studio, and became ill during production. He also had to deal with angry executives with DiC, who complained about the actors' Canadian accents and told him that the show was "not for fucking Canadians. It's for fucking Americans."
DiC themselves were also at the mercy of Toei in Japan, who had to approve of each and every change made, often without consulting the series' creator, Naoko Takeuchi. The episodes were on their air only a couple weeks after being recorded, with 65 episodes being dubbed in three months.
It was canceled on a cliffhanger and couldn't continue at all until 1997 when YTV in Canada and Irwin Toy paid to fund more episodes to give it some closure, with Pioneer funding dubs for the movies. For these, Parliament was fired over Creative Differences within Optimum and replaced with John Stocker, who was also fired later on. The voices for Sailor Mars and Tuxedo Mask were also recast (though Mars later returned), and Fred Ladd was replaced with writers at Optimum.
S and Super S had it worst though. DiC declined to license more episodes, so Cloverway (Toei's then-US branch) stepped in after YTV and Cartoon Network ordered more episodes. Cloverway gave Optimum almost complete creative freedom as long as 77 episodes were recorded in four months. This resulted in many voice actors not returning (including Terri Hawkes, who went on maternity leave) and replaced with poor substitutes. Production was so rushed, that as many as 11 episodes were recorded in each 4-hour session with the voice actors recording each line only twice, with the better take used. In addition, the new voice director, Nicole Thuault, could not speak English (only French) and was a Prima Donna Director to boot, and relied on an interpreter to communicate with the actors. The writers at Optimum all worked independently without any kind of "bible" on what the attack names, transformation phrases, etc. were supposed to be, resulting in them changing many times throughout these episodes. Fans could usually tell which writer wrote which episode based on the terminology used.
All of this contributed to an extremely messy dub that's very polarizing to this day. The dub didn't even cover the final season due to the franchise's legendary legal issues. It's now being replaced with a newer faithful dub from Viz Media and Studiopolis with a more normal production.
The Vision of Escaflowne television series went through several years of Development Hell, in which time the attendant manga series based on pre-production materials was being published, and by the time the series itself made it to air they had to abruptly cut down the plot from their planned 39 episodes to 26, resulting in a very rushed ending that lacked much closure and left several plot threads hanging.
Koe No Katachi deals heavily with ableism in Japan. There were legal disputes over publishing and there was difficulty getting someone to publish it period. The original one-shot was created all the way in 2008 but the most common version is from 2011. It took another two years for it to become a proper series.