@sgunhouse Thanks for the reply. I understand that the ALT key is meant to trigger the menu function.
I'm experiencing an issue where I hit ALT+D for the address bar and it successfully highlights the text that I'm looking to replace, but if you typed something and decide to select the address bar again with ALT+D, it opens up the menu instead of highlighting the text in the address bar again. on occasion. It was just something I noticed when comparing to other browsers such as Chrome, Firefox, or even Edge. Perhaps the sensitivity is a bit high compared to other browsers?
I'm looking to just tone down how frequently the menu pops up when I press ALT shortcuts and I'm not sure how to make Opera imitate the behaviours of other browsers in terms of the menu pop up.