Calls Disconnect When Answering From Sleep Mode

[Android Central Question]

I've been having a reoccurring issue regarding my phone. I get calls on occasion, but 9 times out of 10 it's when the phone is in sleep mode. I do the normal thing of getting it out and swiping to answer it, but it just automatically ends the call like i was ignoring it and just goes to the lock screen. So I have to unlock my phone and then call the person back. Any ideas how to fix this?