Inline editor remains active after tabbing off editor - MS Edge

[Jonathan]

Steps to reproduce

1. Using MS Edge, place focus in an inline editor
2. Tab out of the editor onto a button element
3. Hit the enter key

Expected result

The click event of the button element should be fired.

Actual result

The button click event is not fired but the editor steals the browser's focus.

Other details (browser, OS, CKEditor version, installed plugins)

This can be seen with all versions of Edge. For some reason it doesn't seem to be a problem with input elements of type button, only button elements (though it may affect other elements as well).

I can reproduce this with the CKEditor demo page. I select the inline editor and shift-tab back to the button elements to select one of the other editor demos. Hitting the enter key on one of the button elements pulls the focus back to the editor. I've attached an animated GIF.