Every once in awhile, using the SVN update command through TeXStudio updates the local repo appropriately, but TeXstudio doesn't update the source file in the edit window. You can view the file in Midnight Commander or whatever and see the changes. You can compile right in TeXstudio and they'll be there too, in the PDF. But they won't be visible in the source doc inside TeXstudio unless you kill and reload the program.
On the other hand, a second commit will usually rectify the problem. But that's only useful if you've got the person who made the last commit handy to tell you what you didn't get in their changes. If you don't, and you keep editing thinking you have the latest version SVN says you have, you often end up with one or more skipped paths. Ick!
(I also reported bug 909. I had to do it anonymously as I couldn't log in. Support finally fixed my account. Just thought you folks might like to know.)