HA App false colors representation

Hello I have a problem with my HA APP, which appears only on my phone for some reason?

After updating my S21 to 2024.02.1 textcolors in mushroomcards are displayed grey instead of black. All integrations are one the latest version.
It is NO error of the cardmod code, i checked this 5 times and it works on the phone of my wife.
Also i tried to solve this with code in the mushrooms-thread - no luck :frowning:
I cleaned the cache and data from the app, reinstalled.

Nothing works.

Always getting the same grey text.

What can it be?