UI missing text

[tortho]

ZM 1.36.1 on Debian 11

Under console -> Add monitor

I do getr text on the general, but as soon as I try to click on any of the left hand menu items like source, onvif or other I do get a blank page. Clicking back on general gives me the input field for general. (Attached when clicking on any of the items.. general is still highligted.....

This is only valid under "console". All other pages/menus looks OK.

Any advice?