Um, my S6 Edge is too.
What it is with Samsung, why does touching anything Samsung specific has to have such horrible consequences?
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Is your Gear app up to date? Because this looks like a bug in that Gear app, it mishandles Android Wear "enhancements" in Aqua's notifications.
Can you check and if not, update?
Can you reboot the phone too, to see if the issue persists?