Thanks so much for reaching out!
What device is this happening on?
We'd be happy to see if we can find other examples of this!
Samsung Galaxy S5, 6.0.1 GPG2
I have this same problem as well. Samsung Galaxy S5, Android 6.0.1 just like the original poster.
Users on reddit are reporting this as well: https://www.reddit.com/r/galaxys5/comments/4myawp/notification_panel_icons_keep_resetting_after/
I have the same issue. Also on Samsung galaxy S5, and using Android 6.0.1. I'm surprised, to say the least, that the original post is marked "assumed answered." If anyone has an answer for this one, please post.
I also started seeing this problem just recently. I've had my galaxy S5 over 2 years. This was not a problem originally. But now anytime the phone is rebooted, the notification panel resets.
It seems to have started occurring sometime after one of the latest OS updates. But not exactly sure when. Currently on Android 6.0.1.