Developer bbugb

I’m working with developer 6.0.1 and have already installed SP1. Today while working on a flow I was not able to make changes. I have the Flow service locked for edit, but it seemed like after I stepped through the flow the developer would not allow me to edit anymore. This happened a couple times. The first time I was able to make changes after clicking the save button (with I think is a bit odd too because no changes were made - since I couldn’t - but the save button was enabled). The next time I tried refreshing, saving changing focus, etc… but the only thing that worked was exiting out of developer and opening it back up.

Has anyone else had this problem, and/or know of a fix?