I tried to fix [[https://www.mediawiki.org/wiki/Parsoid/Deployments/T336101_followup#ro.wikipedia.org|some pages at rowiki]] affected by T336101, which worked fine with [[https://ro.wikipedia.org/w/index.php?title=Special:Contribuții/Johannnes89&target=Johannnes89&offset=20230615164535&limit=6|most of them]]. But when trying to make the same change at [[https://ro.wikipedia.org/wiki/Partidul_Comunist_Româ|ro:Partidul Comunist Român]], suddenly the page was empty when clicking „publish changes“ and/or „show preview“/„review your changes“ (which is why I didn't actually save my changes). This bug occured, regardless if I wanted to add or remove text from this article.
When I turn off the 2017 wikitext editor, everything works fine, when I turn it on, the bug appears again.
**Steps to replicate the issue** (include links if applicable):
* Turn on 2017 wikitext mode at [[https://ro.wikipedia.org/wiki/Special:Preferințe#mw-prefsection-editing-editor|ro:Special:Preferințe#mw-prefsection-editing-editor]] (or [[https://meta.wikimedia.org/wiki/Special:GlobalPreferences#mw-prefsection-editing|global settings]])
* Visit [[https://ro.wikipedia.org/wiki/Partidul_Comunist_Româ|ro:Partidul Comunist Român]], click „edit source“ and add/remove any text
* Click „publish changes“ -> „review your changes“ / „show preview“
**What happens?**:
* Page shows empty
**What should have happened instead?**:
* Only the changed text should actually change.
**Software version** (skip for WMF-hosted wikis like Wikipedia):
**Other information** (browser name/version, screenshots, etc.):
I did a screen recording of me trying to edit the page with 2017 wikitext editor enabled (bug occurs), disabled (no problem), another page with 2017 wikitext editor enabled (no problem) and the original page again with 2017 wikitext editor (bug occurs again): https://we.tl/t-VjU06e1EjJ