When I press alt gr + , or . (= keys with symbols < and >) , it returns my page back or forward. Its the same as alt gr + left arrow or right arrow, but it happens only in Codecademy course. Tested it in chrome and edge, both same.
Just tried switching to english keyboard and it works quite well… Idk why I didnt think about it before.
I use czech keyboard layout, so the shortcuts are bit different (instead of shift in english keyboard layout i have to use alt gr for the same symbol).
Still I would appreciate if the shortcut for returning page could be removed.