Since this question has been asked in the community a few times, let me share this news with you.
SafeDESIGNER can be used in Windows 11.
Compatibility tests showed no limitations or incompatibilities. This includes Safety Release 1.10 (SafeDESIGNER 4.4.1) and all mapp Safety versions.
There could be some issues when upgrading from Windows 10 to Windows 11. Please reinstall SafeDESIGNER in that case.