I ve only tested this with external revision control, but when committing, dirty assets (when you have live edit open and have things like spawn pads, prop manipulators, water volumes) can suddenly add an edit, and if that happens during committing a change, the revision control thinks you don’t have the most up to date version of your project, stopping and process and requiring you to update first.
I am trying to do a single backup for the past 5 minutes and this is annoying because it now means that I have to close everything to commit, which adds another 5 minutes of waiting to open things up after each commit.