There used to be a workaround which I had to perform every few weeks:
https://forums.opera.com/topic/37578/solved-return-extention-sidebar-or-rework-the-main-one
As of today this workaround doesn't work any more, because the flag apparently doesn't exist.
Frankly, I've had it with this nonsense. I'm too tired to find a solution, again.
If you think you constantly need to break your browser, be my guest, I'll just go away then and hope firefox has fixed the memory leak issue in the meanwhile.
By the way the "SOLVED" tag on the thread linked above ought to be removed, and the topic activated again, because you guys just broke the workaround too. Congrats.
