Why does only one contact keeps showing up as unread and highlighted but no message?

[Android Central Question]

Why does only one contact keeps showing up and unread but no message?

I broke up with this girl 4 months ago and in the last 3 months she has randomly been popping up as an unread message. But there is no message that was sent. In the last 3 months it has happened ove 200 times. Sometimes she pops up on top of my messages highlighted sometimes it stays where it is and becomes highlighted. Sometimes it stops for days and out of now where happens like 20 times a day. And I blocked her but it's still happening. Why???

 

[Android Central Question]

I broke up with this girl 4 months ago and in the last 3 months she has randomly been popping up as an unread message. But there is no message that was sent. In the last 3 months it has happened ove 200 times. Sometimes she pops up on top of my messages highlighted sometimes it stays where it is and becomes highlighted. Sometimes it stops for days and out of now where happens like 20 times a day. And I blocked her but it's still happening. Why???

 

[belodion]

I don’t know, but try clearing your cached data in Storage, and a Cache Partition wipe.