Hi, I am not sure if this is an issue or not, however
even when in the inspector, the Material is set to “Realtime” on global illumnation, it doesn’t work when I’m in play mode.
GI doesn’t know that the material was updated, because this use-case is impossible in player as you won’t have access to the colour like that.
Try using animation instead, it will work out of box both in play and edit mode.