Since User:Clump just chose to delete the feedback:
That "4 year old report" has the exact error message I got when I tried to use this extension ("Class 'Wikimedia\CSS\Parser\Parser' not found"). I downloaded the version for 1.41 from the extension page, and that version is obviously missing the software, which the extension page says "should not happen anymore".
So something should be done here, and that something is certainly not simply deleting feedback and talking about some obscure "support desk" in the edit summary, which most users will never see. Most unhelpful behavior here by User:Clump.