JabRef version 5.0-beta on Windows 10

Thanks for the new beta build!
The new beta build has a few, uncritical, quirks I want you to inform of.

When the window is displayed on a screen with scaling (e.g. a 4K screen), there is a line between the menue of the window and the tollbar as shown in the attached screenshot.

That line is not present on a screen with 100% scaling. The line only appears/disappears when scaling the window, so when moving the window from one screen to another one has to resize the window in order to toggle the line.