Zoho Campaigns - Keep seeing the communication preferences link clicked on

I have been noticing it for a couple weeks now, but in about 1/3 of the clicks that people are doing in our emails is to what I'm assuming is the communication preferences button in the emails. This is the link: https://campaigns.zoho.com/commpref?$[LI:SUB_PREF]$

But my issue is that I don't think these people are unsubscribing because it always lists those as unsubscribed. What are they choosing when they click into this and why don't I know it?