De-completing challenges

I tried looking this up beforehand but didn’t find anything so I was wondering who else had this problem. I’m assuming other people have had it. It’s where you complete a challenge, get the xp for it then a day later or more find the challenge undone.

This week I completed the 15 auto wep kills in a single match on Monday, earned the xp for it, ranked up and finished my first specialization. I came on today to find the challenge is now not done and obtainable once again. I didn’t lose the xp or de-rank or anything.

Edit: I got the challenge on monday, and on friday it said it was not done and I could do it over again. And then today it was done again. Err glitch in the matrix maybe?

Mods feel free to lock my thread, I have no further use for it.