Scrivener Expanding across Multiple Workspaces

I have a bug where Scrivener is split across multiple workspaces. I am linking to screenshots of the split at bottom. Scrivener will be working fine in one workspace and then (for instance if I click to go to or away from the top containing document in the binder) it will expand so that it is no longer in one workspace. The behavior seems to be triggered somewhat unpredictably. Sometimes opening the top document will do it, sometimes not; sometimes using scrivenings will do it, sometimes not. Once scrivener expands I can only return it to a single workspace by closing and reopening the program.

I am on Ubuntu 12.04 32 bit.

dropbox.com/s/adx7mnrw9pn7q … ce%201.png
dropbox.com/s/o0p8oicuq8126 … ce%202.png