Version conflict box is displayed when saving a page twice in a row

STEPS TO REPRODUCE:

1. Click 'Create' to create a page (e.g. P1)
2. Click 'Create' > 'Save & View'
3. Click ' Edit' and add some text (e.g. a word)
4. Click 'Save & View'
5. Click ' Edit' again and add another word
6. Click 'Save & View'

EXPECTED RESULTS

The page is saved with the last modification.

ACTUAL RESULTS

The document version conflict box is displayed.

If another page is accessed and then returned to P1 page and save it, the version conflict box is not displayed.

The issue could not be reproduced on XWiki 12.6.2 or XWiki 12.8.