Error invalid number entered WP Radius or Loiter Radius Win 11

Hello
a problem with missionplanner 1.3.77 build 1.3.8110.38294 under windows 11, when I go to flight plan without connected FC, the error message comes up:
“Error invalid number entered WP Radius or Loiter Radius”
everything works fine on win 10

best regards
Rainer