These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Good Bad Bugs: The Tank games could behave very strangely depending on what the tanks were doing:
If the tanks were positioned one directly behind the other and both tried to move forward, they may end up spinning around rapidly.
If one tank scores a kill on the opponent while moving forwards towards the wall at the edge of the playfield, once it bumps the said wall it may (in normal Tank) warp around to the other side and stop (or just bump the wall and stop), or (in Tank Pong) start sliding rapidly along the wall and warping around until the next round starts (and if the "killed" tank was in the way, it may take it along for the ride).