In the latest build of PL3 (48), virtual copies are still causing fits. I have noticed a few crashes related to management of virtual copies, most especially deleting them.
Typical work flow is –
(1) make one or more copies
(2) work with one or more of the copies
(3) decide among them which one I like; transfer the settings to the master
(4) delete the copy(-ies)
In the filmstrip, I also occasionally see a large question mark instead of an image, and this too happens after a delete.
If there is any way I can help debug this – such as by providing one of the massive crash dumps that Mac OS provides – I’d be happy to.
MacOS Mojave by the way.