Adaptation Displacement: Averted for Mickey and the Beanstalk, as the non-Disney version of the fairy tale is still pretty ubiquitous in American childhoods (not to mention being one of the few popular fairy tales Disney hasn't adapted into a feature-length film). Played straight for Bongo - it's already obscure by Disney standards, but pretty much no one knows about the original short story penned by Sinclair Lewis.
Edgar Bergen: Just look at that miserable creature. Doggedly struggling to maintain life. A gaunt, lean bag of bones and feathers. Truly a picture of despair. But Donald doesn't whimper. Donald doesn't give up.
To some, aside from Mickey and The Beanstalk, none of the cartoons or scenes stand out too much.
Others instead find Mickey and the Beanstalk to be too slow for its own good and say it is this trope, while instead praising Bongo.
Special Effects Failure: Let's just say that Edgar Bergen's ventriloquist talents aren't particular convincing to most modern viewers.
Tear Jerker: In universe. Willie the Giant's apparent death, or at least for the soft-hearted dummy Mortimer Snerd.
The circumstances that led to Donald's breakdown; being reduced to having paper thin slices of bread with a single sliced bean, it's understandable why he just snapped.
Values Dissonance: Edgar Bergen is throwing a small birthday party for a young Luana Patten. A modern viewer would probably find something quite odd about this little arrangement. May potentially be explainable by how he is a friend of her family and is watching her while her parents are out.
It can be kind of disturbing for modern audiences to watch the "Bears Like to Say it With a Slap" scene, as the idea of 'saying you love someone by hitting them' sounds eerily like a case of Domestic Abuse.