I have not experienced this issue since I originally reported it. What I've done differently is:
- Never edit in retool with more than one retool tab open
- Never edit an app while a retool "play" window is open
I export the project every single time I finish some work worth saving, without fail, just in case. I also close every single retool window before I start editing an app.
I hope this helps other users facing this issue, and hope a solid fix is introduced soon!