Why is the code debugger broken in Opera?

Question

Browsers

I missed the moment when it happened, probably a week ago, apparently after some kind of update (like when the plus / minus buttons were added to the numerical values), when copying the css code, it is inserted crookedly: see the screen with some random transfers or new lines. How to fix?
OS 10.13.6 | Opera 81.0.4196.60 (x86_64)