I thought this would have been a common problem to encounter but I hasn't seen any questions about it being asked.
It may have been me clicking the wrong shortcut but my grab tool doesn't work as expected anymore. Grabbing now extends new edges and forms new vertices. I want the grab tool to work in a way where the very same edges gets extended, whilst displacing the selected vertices. photo included in what I meant. I am able to fix it to make it work as desired, but I kept bumping into the same problem, and I am not sure whether you guys have any advice so I can stop myself from doing it, and waste my time fixing it before moving on with my project :) Thanks for reading!
I believe what happened is that I've been clicking a shortcut accidentally that creates new vertex and edge. But I am still not sure which keyboard button that is