Both screens set to 125% scaling in the gnome shell settings.
KeepassXC renders at 200% instead of 125%.

- keepassxc 2.7.10+dfsg1-1 (uses QT5)
- gnome-shell 48.7-0+deb13u2
- qt5 5.15.15-3


Workaround
==========
::

  QT_SCALE_FACTOR=0.5 keepassxc