So if you're wondering how to take back control of Alt Pageup, down Alt W, you'll have to navigate to Preferences, Hotkeys. And delete these hotkeys.
These key combinations are standard on computers. I use them a lot. I am sure others do too. I am astounded that Lastpass took control of them in my web browser (stole them..) , and made them un-usable for all web browser activities, until I just now managed to undo this change.
Alt W opens a new tab on web browsers. ITS A HEAVILY USED FEATURE and yet lastpass decided to steal it, and not clearly explain that. Grrrrrr. I'm furious with how disruptive this has been.
How about Lastpass prompts me to set them up, and hence LET ME KNOW WHAT IS GOING ON ?
Unless this is corrected, I cannot recommend LastPass to other people.