A lot of people believe that the bug in the Museum level of the Field Trip world renders the game un-100%-able. It IS possible to circumvent it. Here's what KingWingull told me:

Okay, so we did some testing and apparently you actually CAN complete this level 100%. Basically the paths are supposed to change when a Bunny completes a full circuit in the top room and again when they complete a full circuit in the bottom room.
They change correctly for the Hub room, but bunnies sent to top/bottom will NEVER get out
so to beat the level you only let 1 Bunny go ahead and park yourself to block all the others,
then you do it again for the bottom room.
If you really wanted a little more speed-tech you can technically outrun the bunnies and release them (from the Right side room) and get the top room key and just barely have time get into blocking position. Thank you my telling me this my guy.

Here's a video of the workaround from its discoverer (recorded in 7.8, but should work in 8.0d). Can you tell he's a speedrunner? Shoutouts to Reality.