Idk, I wish I knew a solution, but researching didn't bring me anything. But it has come to the point that I feel KDE is not worth it anymore for me. Just didn't have the time to switch some wayland WM.
Maybe windows rules will now work properly instead of being buggy and delete themselves...fingers crossed Imho KDE is too big, there are so many cogwheels they miss the opportunity to actually polish each and every aspect.
What? Strg + Mousewheel, you can even set the option to only zoom text. At least on firefox. No clue what kind of browser you are using which is not capable of that.
I don't understand the question?