iMac graphics bug and bluetooth not connecting

[Chris_Main (Chris)]

Hello all, I am running Zwift on an mid 2011 iMac with an i7, 8gb ram, and an AMD HD 6970 and I am getting an in game graphics bug that looks like a pixelated shadow that is in front of my avatar. ![Screen Shot 2021-11-21 at 9.09.38 PM|690x388](upload://zssEJz6VmONmS9j

TLKLOOycH95S.jpeg)
Does anyone have any suggestions on what is happening and how to fix it?
Also, the iMac doesn’t see my Wahoo Kickr Core in bluetooth only with an ANT+ sensor, any suggestions with this problem would be appreciated.
Thanks.

[Dave_ZPCMR (Dave)]

Looks like this is back: Black ‘Refracting’ line on the road

[Chris_Main (Chris)]

Thanks for the link.