Wasn't this already fixed? Or was it previously just for some cases?
There are multiple cases to fix - and we're still looking at some more.
@MechQueste : the recent major classic rich text editor update turned many templates from puzzle pieces into rendered templates, but technical restrictions means we can't do that for everything (and we've had to scale it back a bit from the original release).
KockaAdmiralac hit the nail on the head there - and this editor update in particular was very significant internally, even though not a great deal visibly changed for editors. Wikitext is incredibly, amazingly flexible - but this means there's many edge cases that have to be accounted for.