Output profile bug
AE 2020. Renders to Prores HQ with a workspace setting of "Rec.709 Gamma 2.4" produce a file with the incorrect profile "HDTV (Rec. 709) 16-235" when read back in, producing a gamma shift with colour management turned on.
Renders to Prores 4444 seem unaffected.
This is fixed in After Effects 17.0.1, released last night. Please update and let us know if you’re still seeing any issues.
Thank you for reporting this issue. The team is aware of it and we are looking into a fix.