Attack Simulation Training recording "clicked message link" when reporting as junk mail

Question

I've run my 2nd simulation training attack on my team but I was surprised to see that this one had more users showing as "clicked message link". Looking into it I can see that they have reporting the email as junk (not phishing) and when I spoke to them they insisted that they had not clicked on the link but had immediately reported it.

I can see those that have reported it as phishing show up as "reported message".

I did a test of this myself and chose to report the message as junk and sure enough, it shows me as "Read Message, Clicked message link".

Surely this is an error?