Bitwarden Window too small in Firefox addon on 4k monitor

I just installed a 4k monitor (3840 x 2160) and immediately noticed that the Bitwarden window is far too small - in the My Vault display, it shows only 4 items. Vertical Scroll bar works, but it makes it very hard to use.
I checked it in Microsoft Edge it shows 9 items (same configuration). Is there a place where I can change this window size by adjusting parameters?