Facebook Messenger App Hacked

[JeffNT326]

I'm not sure where this should go, so please forgive me if this is the wrong sub-forum - mods feel free to move it to the right place.

Anyway, earlier today I was using Facebook Messenger app on my mom's iPhone 4s when suddenly the text entry field populated with a message without me entering anything in on the keyboard. I have never seen this happen before. I'm wondering if this is a new hack or if anyone else has seen this behavior before?

It's definitely concerning.

TIA

 

[dictoresno]

1.) someone was logged into your account somewhere and messing with you

or

2.) you tapped "paste" by accident

 

[JackieInCo]

Did it say that they knew what you did last summer?