T8 reduced channeling below min roll

Ended up finally getting a t7 channeling affix on a helmet, went to do a final t8 to be able to channel warpath for longer, the roll says from 61-68; as it says it the parameters of what it CAN roll, but it rolled at 60. I do not understand the reason.

https://imgur.com/a/ueLnVwO

I wasn’t able to locate any in-game bug reports for this. Could you please submit an IGBR? The in-game bug reporting system automatically enters issues into our triage system, and provides logs and other critical information for debugging issues.