All Mangas Reader

So, when I read manga the notification isn't going away, and when I exit out of Chrome and reopen it, it remarks them all as unread. This is happening for all three of my websites.

You only have three websites marked under "supported websites"?

what I meant was i only had 3 websites that were actively being used;

The problem did go away on it's own, but it resurfaced and it's scaring me away from using chrome.

If you only have 3 websites actively being used, then go into your options and disable all the other websites. This sounds like a memory issue..

I already did that.
All of the websites that are not actively being used are deactivated.

Having too much manga in your list will also cause a memory issue so if you have alot of manga try to delete completed or duplicated mangas to see if that solves the issue.

Remember to save the export info before you try to delete as if this isn't the issue, you can go back to the previous list.