Dialog windows not really closing

Steps to reproduce:

  • open Inkscape
  • Inkscape -> Preferences, Inkscape -> About, ...
  • Presing (x) or Close

What happened?

Dialog windows are not really closed, they are sent background and they keep "active or open" if you look in Window -> Preferences or About Inkscape.Screenshot_2020-04-18_at_10.55.08

What should have happened?

Dialog windows should have closed (instance must disappear) not sent to background.

Inkscape Version and Operating System:

  • Inkscape Version: ... 1.0rc1 (09960d6, 2020-04-09)
  • Operating System: ... macOS
  • Operating System version: ... Catalina 10.15.4