About dialog opens in the background when other app has focus

[cmeury]

Steps to reproduce

1. On MacOS (Big Sur 11.0.1), have window in the center of the screen with active focus
2. Click on the Objektiv item in the menu bar
3. Choose "About"

Observation

• The About dialog is opened in the background.

Expectation

• The dialog is shown to the user in the foreground.

Workaround

• Click once on an empty space in the menubar to give it focus, then open the About dialog. Curiously, this will show it in the foreground.