This is honestly the best and really the only easy way to assign bookmarks to a container.

That said, there is one thing that has been bugging me. For some reason bookmarks often break with a “Used an expired/invalid token” error, which means I have to manually reassign them.

Would it be possible to add an option to relax the token retention policies?

I have read about the attack vectors and understand the risks. I would be totally fine with this being an opt-in or advanced setting if it helps avoid bookmarks breaking so often.

Works great, until you sync your bookmarks and they don't work on the other computer

Does it's job wonderfully, including for bookmarks folders.