Bug Subscriptions vanishing.

I know a lot of people don't use it. But I do, I use thread subscriptions to track my threads. And I noticed my subscribed threads were significantly less. When looking at my Thread Log I see I have a lot of threads where I replied and should be in my Thread Subscriptions.

I thought, maybe it is the update. I will just go and re add the threads I want to be subscribed to. (I'm automatically subscribed to threads I reply in OOC/IC). But today I am back to having once again a few threads I am subscribed to. Not sure why they just vanish from my subscribed threads!


edit: not clear enough

Edit: I found out they vanish after I reply to them!

Edit: They definitely vanish after replying! :)