@labourer: i want to add that after trying a right click, the browser won't accept left clicks either. By minimizing and subsequently maximizing the browser window Opera gets functional again - until you try a right click the next time.

Hello,
i'm using Opera 126.0.5750.18 on Windows 11, version 25H2, which is up to date, on a tablet PC, i.e. with a touch screen. On a touch screen, right clicks are done by holding your finger for more than ~ one second on a link. In this Opera version, a right click locks the entire browser. No context menu appears, scrolling, minimizing or closing the browser, using the controls on the top right are impossible. The browser gets unusable.
best regards - labourer

Thank you for this update! It solved a huge problem.