GTK3 on Windows (msys2) - AltGr key detected as Ctrl key
Steps to reproduce
Just build and run this small example that shows the issue https://github.com/giuspen/cherrytree/blob/master/sandbox/gtkmm/simpletextview.c
Current behavior
AltGr raises the flag GDK_CONTROL_MASK
Expected outcome
AltGr down does not raise the flag GDK_CONTROL_MASK
Version information
mingw-w64-x86_64-gtk3 3.24.34+156+g812b3930-1
Additional information
Also discussed on https://github.com/msys2/MINGW-packages/issues/13372 it used to work it's a recent regression