I am struggling with this issue - when editing offline and trying to copy feature, app crashes. It crashes when clicking on the "Copy"; the copy dialogue does not even show up. I did not find any situation bringing the problem, it seems to crashes randomly. It does not appear every time, most of the time it is possible to copy feature at the beginning. But when the problem occurs, it is not possible to copy any feature (when starting app again).
Thanks for your help!