i sent one in yesterday, but if they open it on their end the issue is already gone. Likely just need to play around with it to try and make it happen, I haven't found any particular reason it happens just yet.
I sent one in yesterday, but as you say they can't recreate it ...
Using a combination of closing and reopening the project, and regenerate and cleanup (although not necessarily all three) normally fixes things, but we shouldn't have to go such to EXTREME lengths to fix these issues.