Comment 17 for bug 1046336

I'm experiencing the same bug. Fortunately, I have (accidentally) found a workaround. What you need to do is use any program to open a file. When you get the window to select which file you want to open, you can drag and drop the folders you want as bookmarks. These will then be added to the "Personal" in Files.

Not sure if this will work with remote shares, maybe someone else can check that?

I don't know if this is the right place to share this workaround. If you know of a better place let me know, or better yet: post it there yourself!