Why is my keyboard showing grey slash marks on each letter after I press it?

[Kishan_Halai]

Why is my keyboard showing grey slash marks on each letter after I press it.

This started today. I thought it was some sort of Trojan but I scanned my phone and nothing came up. I'm running android KitKat on a nexus 4.

 

[B. Diddy]

Re: Why is my keyboard showing grey slash marks on each letter after I press it.

Welcome to Android Central! Are you using the stock Google Keyboard? Is it otherwise typing correctly?

 

[Kishan_Halai]

Thank you. I'm running stock keyboard. The marks come and go, it's very strange. It types correctly.

 

[B. Diddy]

Any way you could take a video of it and post it, or post a link to it? I imagine it would be difficult to get a screenshot, if the slash marks only flash by.