I almost always switch windows with Alt+Tab, not with a mouse, so it fits very well for that flow. Understandable if it doesn't do the trick for you though.

I’m well aware of all these hotkeys. The issue is I’m using the mouse with my browser, scrolling clicking etc. Reading gives me an idea so I click on my terminal that’s always open. This is the best time to open a tab imho, and have been doing it for decades.

Thankfully there are a dozen terminals to choose from that don’t make konsole’s minor mistakes. (Although chances are they made others.)