I'm pretty sure materials on FFG game lines are not truly "canon" but rather a (probably carefully cleansed) version of legends
that was until i was searching information about Roon on wookieepedia: http://starwars.wikia.com/wiki/Roon/Canon
and i found this:
The planet was confirmed to be canon when it appeared on a galactic map in the Star Wars: The Force Awakens Beginner Game released by Fantasy Flight Games in 2016 for their roleplaying game system.
so i'm guessing... FFG game lines are canon now? or LFL/Disney confirmed some part of them (ie the TFABG's map) as canon?
or just wookieepedia is wrong?