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@Anshu kumar It helped. I can't use this solution. If the values are specified 1 or 2, the application is too small or too large.

Debian 10 with gnome. The problem is present in wayland and Xorg.

env | grep QT
QT_ACCESSIBILITY=1
QT_SCREEN_SCALE_FACTORS=1.2
QT_AUTO_SCREEN_SCALE_FACTOR=0
QT_SCALE_FACTOR=1.2

I tried

export QSG_RENDER_LOOP=basic
export QT_OPENGL=software
/opt/enpass/Enpass

The problem persists.