To aid you in checking your hotkeys, I would like you to take a look at the following dataview query:
It’ll show you which keys are mapped, and it’s not unlikely, @PastaBoy, that you’ll find you’ve added the Shift + E in that list. If so, go to Settings > Hotkeys, and search for the corresponding command from the list, and hit the “small x” icon next to the key to get rid of it, and possibly assign another after hitting the plus icon.