### Summary When in an issue is in "full screen" mode, a "mouseup" event in the whitespace margin on either side triggers an "open" command. This makes ### Steps to reproduce - Open any snippet or create one - Start adding a comment on the snippet. Click to "Go full screen". - Click in the whitespace margin on either side of the window and see an "open" window appear when you release the click. ### What is the current *bug* behavior? Mouseup triggers an "open" command. ### What is the expected *correct* behavior? Mouseup does nothing. ### Relevant logs and/or screenshots This is gitlab.com:  ### Output of checks This bug happens on GitLab.com