Table loses geometry after horizontal split and removing column

[FilipTokarski]

📝 Provide detailed reproduction steps (if any)

1. Open some table test
2. Select a cell and split horizontally
3. Click Delete column

✔️ Expected result

Column is deleted

❌ Actual result

Geometry is lost, additional columns inserted, content changes cells:

📃 Other details

It occurs on master, on online docs ( since version 11.1.0 ) it behaves a bit different - after deleting column, you can see there is a ~1px space between the last column and table border highlight ( with a few pixels rendered grey ):

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[mlewand]

It occurs on master, on online docs ( since version 11.1.0 ) it behaves a bit different - after deleting column, you can see there is a ~1px

The reason is that there's an empty row (with only a br) in the model:

That remind me of "it's highly possible that other commands might produce a markup like this in certain scenario" part in #6422 (comment) 😄

Luckily this time we have BR so it does not crash the code though.

It would be easy to adjust fix added in ckeditor/ckeditor5-table#278 to also act in case there's a row with only br in it.

[mlewand]

Potentially related issue: #6406. Moving to nice-to-have milestone, see #6406 (comment).

[jodator]

One cannot simply writer.remove( tableRow ) in tables :/ #6545