On simplewiki, the page "Wikipedia:Requests_for_deletion/Requests/2010/ASDFGHJKL;" exists:

https://simple.wikipedia.org/wiki/?curid=233152
https://simple.wikipedia.org/w/index.php?title=Wikipedia:Requests_for_deletion/Requests/2010/ASDFGHJKL;&action=view
https://simple.wikipedia.org/w/index.php?title=Wikipedia:Requests_for_deletion/Requests/2010/ASDFGHJKL;&action=edit

However, when you try to access it using the canonical /wiki/ URL, it forwards you to the page "Wikipedia:Requests for deletion/Requests/2010/ASDFGHJKL" without a semicolon, which doesn't exist.

https://simple.wikipedia.org/wiki/Wikipedia:Requests_for_deletion/Requests/2010/ASDFGHJKL;?action=view
https://simple.wikipedia.org/wiki/Wikipedia:Requests_for_deletion/Requests/2010/ASDFGHJKL;?action=edit

Steps to reproduce

Visit one of these pages:

• https://simple.wikipedia.org/wiki/%3B
• https://en.wikipedia.org/wiki/%3B
• https://it.wikipedia.org/wiki/%3B

Or, instead, visit one of these websites and in the search bar type ; and click:

• https://simple.wikipedia.org/wiki/
• https://en.wikipedia.org/wiki/
• https://it.wikipedia.org/wiki/

You will be redirected to the homepage, instead of visiting that page.

Tested:

• mer 17 mar 2021, 22:54:38, CET from Italy

Served from:

• mw1366.eqiad.wmnet
• mw1411.eqiad.wmnet
• ...