Sorry, I’ve never tried to revert a package but I “think” synaptic can revert packages (system or otherwise) and shared it because I wanted to make sure it works on Linux mint. Maybe I should have clarified that’s more of a “best guess” on my part than something I’m sure of.
The risk of rolling it back is even if brave works fine with an older version, if a different piece of software was tested with the newer version and expects it you could end up with a situation where other pieces of software that depend on it either break or keep trying to force you to update.
If you have a system backup and all you’re risking is time then I’d say go for it, just wanted to bring up the potential risks and some other options as well.