Cannot copy paste elements or edit polyline nodes only inside a block window

[srjmas]

bug. v2.2.0 modify->copy works fine. node editing in the main window works fine Try to open with v2.2.1 - crashes Attach the terminal output. Linux Mint

err.txt

[sand1024]

@dxli it seems it in 2.2.1 branch, in master/2.2.2 I can't reproduce this

[dxli]

@srjmas

It helps, if there's a simple procedure to reproduce this issue.