I am unable to delete the web addresses in the Address Bar in the Task Bar. I tried all the obvious and usual procedures (right clicking 'delete", highlighting then clicking 'delete' etc.) but they always immediately return.
It may not be the same but I had a similar issue and it turned out to be a faulty keyboard, one of my keys was stuck down. Type into the address bar the unplug the keyboard then try deleting with right click and see if it that.