Bug due to T69225: Hovercards: Space before removed parentheses should also be removed in the extract in src/preview/model.js:
https://de.wikipedia.org/w/index.php?title=Deutscher_Orden&oldid=164154458 has the sentence
Mit dem Johanniter- und dem Malteserorden steht er in der (Rechts-)Nachfolge der Ritterorden aus der Zeit der Kreuzzüge.
As Popups/Hovercards removes parantheses and stuff inside of them and also spaces in front of them without checking whether that is always a good choice, that text in the popup misses a space between der and Nachfolge:
Mit dem Johanniter- und dem Malteserorden steht er in derNachfolge der Ritterorden aus der Zeit der Kreuzzüge.
The code should check via look-ahead/look-behind if there is a punctuation marks xor a letter/number/etc after the corresponding closing parenthesis and act accordingly.
As different languages use different punctuation marks I doubt the entire approach and underlying idea is actually I18n safe.