Two undo steps on delete

[fredck]

1. Go to the online demo.
2. Double-click on "CKEditor" in the title to select the work.
3. Backspace to "Delete".
4. Cmd+Z to "Undo". Issue: There is only a selection change.
5. Cmd+Z again. The deletion is undone.

[fredck]

Something similar happens with different variations of selection, like selecting one whole paragraph.

[Reinmar]

I've encountered it myself as well and forgot to report. Most likely this issue will need to be moved to ckeditor5-delete, but there's a chance that it's an issue in ckeditor5-undo, so I'm leaving it here.

[Reinmar]

Already fixed. Most likely in ckeditor/ckeditor5-typing#42.