Change reco can't be saved with all deleted content

[MSoeb]

Describe the bug
If a change recommendation involves deleting the entire content, it cannot be saved. A space must first be inserted. This is incorrect behavior.

Saving not possible

Saving possible if a space is set

How to Reproduce

1. open a meeting
2. open motions
3. create a motion
4. open motion > add change reco and delete the whole content > saving not possible

Expected behavior
It should be possible to create a change reco that deletes all content without placing an unnecessary space.

Additional information
The problem does not seem to exist in lists. There, deleting an entire list item works.