Invalid access to memory

This appens on Citrix, when I try to close a remote connection
WinSCP 5.11.3 (and previous versions)

Error message:
Invalid access to memory.

Stack trace:
(006DF730)
(000624F6) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(00017766)
(00017808)
(003BDE00)
(001A4F39)
(0037BCBC)
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167BF) USER32.dll
(00016885) USER32.dll.DispatchMessageW

Status: unknown_rel_addr

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.