If you disable and re-enable your Instagram, it will set off the notification apocalypse

Returning from a digital sabbatical during which you disabled your Instagram account? Get ready for a blast from the notifications past, courtesy of a tagging glitch.
I recently temporarily disabled my Instagram account for the first time, and when I re-enabled my account - something weird happened. Instagram re-tagged everyone I had ever tagged in a photo. Yep, notifications and all.
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I didn't realize it at first. Upon re-