"View Source" button does not respond when pressed for *.ui files
I was showcasing to a newcomer how to make your own GNOME Javascript Hello World application with Builder, when I ran into the issue that I could not show him the source code of the *.ui XML files. Double-clicking the window.ui file opens a preview of the UI file in Builder, but I could not get Builder to show me the source code (XML). Pressing the "View Source" button didnt seem to do anything.
I am using GNOME Builder 3.32.0 from flathub.