FT8 software not deciding on 40m. Works fine on other bands.

On 40m, everything looks and sounds right, but nothing is getting populated into the band activity. Rx bandwidth is set to 3k wide and all settings appear to be set to identical r values as on other bands where it works fine.

Please see video demonstration on my YouTube channel at this link:
FT8 issue on 40m only
https://youtu.be/otDCZ31x2J0

Thanks
KG2RG