Please post a log file from the "previous" version.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
I use "SCP" protocol login, WinSCP can not supported Chinese file names
> 2021-04-22 09:53:40.519 printenv LANG ; echo "WinSCP: this is end-of-file:$?"
! 2021-04-22 09:53:40.522 -sh: printenv: not found
< 2021-04-22 09:53:40.526 WinSCP: this is end-of-file:127