What part of I am done did you miss? You clearly are not capable of helping anyone. You can't read, don't give clear instructions, and I posted an easy fix. Set the start page to go somewhere, not blank and all the crap stops.
Now once again I am done. This is the most snarky and useless forum I have ever been on.
@atls it's probably better if you open a new thread for this, it's not related to the problem described in this thread so far. For those interested, that problem was due to a problem with the Widevine DRM plugin, which is used by e.g. Netflix and Amazon Prime to protect their content, but not by YouTube.
@rogermallol Hey there, have you figured this out? I have a similar problem, I have a green fullscreen button disabled on Opera but can access fullscreen via View menu, but the green button remains disabled. Dunno why this happens..