I have the feeling Opera just updated itself without asking.
Opera looks different and apparently now all homepages look like shit because links in text are somehow bigger than text around. Also at some points text reaches into pictures.
Freshly downloaded Firefox shows all the messed up pages without these bugs.

Anyways, where are the update settings hidden in Opera 29.0? I can't find them!

I am back to Firefox for now. Opera is becoming more weird every day.