There does seem to be a little inconsistency with it. (IRC/Websocket at the same as it all bridges to TMI in the background, just either provides a WS or IRC compatible interface).
Which I initially couldn’t replicate, but could with some keys generated with different scopes at a later date.
I’ve referred it but we’ll have to see what Twitch says on the matter. It might be related to some reported inconsistencies to the output of /mods