Steps to reproduce:
Go to https://meta.wikimedia.org/wiki/Learning_patterns/Business_cards_and_email_adresses_for_volunteers
Click edit next to any section but the first
Expect result:
Allows editing the section
Actual result:
You tried to edit a section that does not exist. It may have been moved or deleted while you were viewing the page.
Referring to https://meta.wikimedia.org/w/index.php?title=Learning_patterns/Business_cards_and_email_adresses_for_volunteers&oldid=19229183 :
&action=edit§ion=1 already goes to the very last section on the rendered page, which is == Endorsements == in the page source.
All over section headers before have been obfuscated by <translate> markup, like:
== <translate><!--T:8--> What problem does this solve?</translate> ==
The correct markup is covered on https://www.mediawiki.org/wiki/Help:Extension:Translate/Page_translation_example#Step_4:_Making_changes :
<translate> == What problem does this solve? == <!--T:8--> </translate>
Closing this task as invalid as wrong on-wiki content is out of scope for Phab. :)