Don’t you use wikEd/wikEdDiff? T258815 is about them, although from a different perspective.

In T260108#6375760, @Tacsipacsi wrote:

Don’t you use wikEd/wikEdDiff? T258815 is about them, although from a different perspective.

No, without WikiEd.
But I use

mediaWiki.loader.load('//en.wikipedia.org/w/index.php?title=User:Enterprisey/fancy-diffs.js&action=raw&ctype=text/javascript');

It looks like a different gadget that does the same thing (making wikitext links in the diffs clickable), and the result is similar.

@matmarex as @Tacsipacsi referenced above this issue is related to T258815 would @ppelberg be right to assume that this issue will be resolved once T252555 is?

Yes

The patch for T252555 is deployed now, and this should be fixed as well. @JAnD Can you confirm that the issue no longer occurs?

Hey @JAnD we will close this on 30-Oct if we do not hear from you. Please feel empowered to reopen the task if the issue persists.

In T260108#6575303, @matmarex wrote:

The patch for T252555 is deployed now, and this should be fixed as well. @JAnD Can you confirm that the issue no longer occurs?

For now I have not [reply] in diffs, so I cannot confirm or reject.
But the external script was changed too.

In T260108#6593839, @JAnD wrote:

In T260108#6575303, @matmarex wrote:

The patch for T252555 is deployed now, and this should be fixed as well. @JAnD Can you confirm that the issue no longer occurs?

For now I have not [reply] in diffs, so I cannot confirm or reject.
But the external script was changed too.

Actually the fix was to remove the [reply] links from diffs—now they are generated server side and appear only in actual content. So not seeing the links means that the fix works.