As said in the comments, the issue is that Ampere doesn't take into account the battery consumption when showing the charging current.
AccuBattery, which takes into account the battery consumption when showing the charging current:
Sounds like you may have booted up in SAFEmode on your Android device. When you boot into SAFEmode all 3rd party apps are organically disabled to allow for more accurate troubleshooting of the device. You will know that you are in SAFEmode by looking at the bottom left corner of the device, If it reads SAFEmode than that would be your issue. In the event ...
Was not the cable in my case. Turned out to be the ac to USB adapter from the wall. Switched my OEM ac to USB adapter yesterday to an apple ac to USB is when my problem happened today, switched back to OEM shipped with my tablet and everything is back to normal.
Hope this helps some of you.