Manager suddenly rendering all fonts in fields incorrectly

[chm]

I am using the desktop version of Manager on Ubuntu 20.04LTS I started Manager this morning to find that I cannot read any of the text in many fields . This has made the application useless. This problem is also duplicated on the Ebay site which I view on a Chrome derivative browser, the problem also appears in Firefoxwhich might mean it is something to do with the the way a browser engine renders the fonts ?

Please see the screen shot to get an idea of what is happening .
Any suggestions?

[lubos]

You should probably try and get help from Ubuntu forums as this issue seems to be happening across multiple apps on your computer.

[chm]

Thanks lubos that probably right . It’s solved , it was a corrupted font.