Unspecified badness reasonably deep into Qt code.
I'm not sure of the detail of this issue. When closing the CS, an exception was thrown. I don't remember what the message was, and it didn't happen any of the other times I've closed the CS, so I'm not confident that I'll be able to replicate it.
Here's a stack trace:
Here's the popup in qobject.h
:
As I said, I don't recall what the initial message was, so it could have been the assert or it could have been the generic read access violation.
The line numbers for our code should match up with 5e12073b (I had some changes locally, but they shouldn't make a difference). Also, I'm using Qt 5.11.1.
Sorry this is so vague.