BigIP GUI on HA pair says NTP off by 8 seconds - however on CLI both match

Recently I noticed the NTP error below on the BigIP GUI...

 System Times of Devices Do Not Match

One or more system times of the devices in the device trust do not match the system time of the local device. Auto or manual device group sync operations may fail.

Verify that the NTP Settings on all devices are properly configured and that the system times are equal.

• /Common/apple-pie.crust.com is 8 seconds behind

...and updated the NTP server list on both vcmp guests in the HA pair (also updated the chassis they reside on). Afterward, I checked the clock on both via the CLI and they showed the same time, however I'm still getting the NTP error on the GUI. The example above from today says it's off by 8 seconds, however checking the HA pair in CLI show both match.

Has anyone seen this before?

Thanks!