I have Opera GX as my main browser, but there's an issue which has always annoyed me. Every so often when I middle mouse click on a link to open it in a new tab, it will open duplicates of the same tab.
This has happened a lot more recently, and it can open up to 4 tabs when I click on one. This is really irritating, as I have to go and manually close them, which isn't that big a deal but it's still an inconvenience.

Can anybody help?