Reminder about alternatives:

For the less extreme case, when you want mostly one distro, but also a few packages from another one, there is “alien” [0] which converts between different package formats. It sometimes needs help with system integration or dependencies, but occasionally “just works”

For a more extreme case, there is a schroot (or a docker container) with /home, audio and X mapped in. Works surprisingly well for desktop apps, like those embedded IDEs which require a specific Linux distribution you don’t want to run. You do have manage desktop integration (menu items, file associations) yourself though.

Those solutions are hard to set up than bedrock, but they also do not have special filesystem magic, so I bet they are much easier to debug.

[0] https://manpages.debian.org/unstable/alien/alien.1p.en.html