In test.wikipedia.org Mediawiki 1.33.0-wmf.14 (a6319bc):
1: Partial block User:Apples from a page (e.g. `Astronaut`)
2: delete `Astronaut`
3: Now User:Apples cannot edit at all, anywhere!
User Jni-test789 sees error messages:
| {F28081156} | {F28081154}
`PHP fatal error: Argument 1 passed to Title::equals() must be an instance of Title, null given`
Also the page name vanishes from block list:
https://test.wikipedia.org/wiki/Special:BlockList?wpTarget=Jni-test789&limit=50&wpFormIdentifier=blocklist
Even worse, now I the blocking admin (in separate browser application) get the same error when trying to navigate to the deleted page:
https://test.wikipedia.org/w/index.php?title=User:Jni-test789/sandbox&action=edit&redlink=1
Or when I try to edit the block, I recieve:
{F28081163}
Restoring the page restores blocked users editing of other pages and my access to it.