Browser Display issue

Hello all - First just a quick one to say how much I like pgadmin - fast and light it does what it does well and that's very important; thank you for your hard work

Since a few days I have had a browser display issue. with overlapping sections as illustrated below :

this is my current version 

Running on linux mint 20.2 

This is only happening when I start pgadmin; if I refresh the server, the everything is fine; I have not tried to just refresh the database.

Didier