It seems Enpass is picking wrong scale factor for your display.
From the desktop, right click the Computer icon. Then go to Properties from the context menu -> Advanced system settings -> Environment Variables -> New. Add an environment variable to force correct value for your display.
Now add another variable
QT_SCREEN_SCALE_FACTORS=1 (for 100% scale)
QT_SCREEN_SCALE_FACTORS=1.25 (for 125% scale)
QT_SCREEN_SCALE_FACTORS=2 (for 200% scale)
Now, restart Enpass.
If you have multiple displays, please provide comma separated value for each one.
QT_SCREEN_SCALE_FACTORS=1.25;2 (for 125% scale on primary, 200% on secondary)
Please open ~/.profile in your favorite editor and append these lines and save
(adjust as per your display)
In case of multiple displays:
export "QT_SCREEN_SCALE_FACTORS=1;1" (adjust as per your display)
Now logout/login current desktop session and start Enpass.