Remove Grey Bar above Anchor Ads for Adsense?

[Donny]

Hi Guys,

I have implemented AdSense's Anchor Ads for Mobile Devices and unlike every website I've ever seen them on, I appear to have a grey bar above the ad that allows you to close the ad. This is in addition to the standard X in the corner.

Does anybody know how to remove the grey bar, and leave just the X?

I can't seem to find anything within the code that's applying the grey bar.