Gestures do not work on Win8.1
I used right click and then quickly left click to go back. Correspondingly left and then right click to go forward.
It does not work on Win8.1 anymore in a way it did couple of Opera versions ago.
I'd say it works sometimes on some pages.
And I suspect this is because gestures timing has been changed somehow.
Moreover hold right mouse button and move mouse left (to go back) does not correcly work either - sometimes it gets me not one but 2-3 pages back. It looks like these gesutes are too much mouse-sensitive.
Is there any way I can control sensitivity of a gestures?
What version of Opera was the last version where it worked for you on Windows 8.1?
Hard to tell, I'm not using this home PC every day - mostly on weekends.
It could autoupdate few versions without my noticing it.
The same Opera version (30.0.1835.88) is on my office Win7 desktop and there are no issues there.
That is the current version. Maybe something has had its configuration changed on your home machine.