[Edge] Undo-redo flicker when style applied

[Tade0]

Steps to reproduce

1. Build latest master.
2. Open the /samples page and apply the "Special Container" style to the content.
3. Hit Undo twice

Expected result

After first undo nothing interesting should happen.

Actual result

On second undo the style appears for a split second only to disappear.

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

Edge 14.14393

[Marek Lewandowski]

Can't reproduce it. Is there any particular block, where the style should be applied? Should undo be hit with keyboard or a UI button and a mouse?

[Marek Lewandowski]

@t.jakut can't reproduce it either.

[Tade0]

Different procedure:

1. Apply the "Special container" style to "hello world"
2. Undo.
3. Apply the style again.
4. Undo.
5. Redo.
6. Try to undo.

[Jakub Ś]

I could not reproduce it as well with any of given test cases.