Bug Subscriptions vanishing.

I've been running into this issue across all accounts as well. 

I just recently ( within the past day or so ) cleared all my browser caches, so I can say that for me, that's not the cause. I keep subscribing to threads and then after I reply to them the thread subscriptions are gone. I've even double checked.

Specifically, today I re-subscribed to i hope you devour since Talamasca and I are spreeing and I wanted to make sure I'd get notifications and it appears after I replied it unsubscribed me from the thread. After checking my subscribed threads I only have 1 listed ( nähren; which I haven't replied to since the 6th and was the day I subscribed to it so it wouldn't get lost ) for Praimfaya instead of the 2 threads it should be.

I haven't removed any subscriptions manually. As a personal rule of thumb, I never remove them until they're archived and/or my character has made an exit.

For additional reference, I use Google Chrome browser on my desktop ( macbook air, if you need the specifics ).