STEPS TO REPRODUCE:
- Login with Admin or with an user
- Go to a page, select some text (or a word)
- Press CTRL + M and fill in some annotation text
- Click "Add annotation" button
The annotation is added.
The keyboard shortcut CTRL + M does not work because is overlapping with the (Sidebar) Reading List keyboard shortcut which is currently fixed in Edge (and the option to change it is not provided in browser).