Many players are still missing a subclass from not receiving either the new light arc or solar quest. Bungie clearly thinks this issue was fixed or reports of this coming from inexperienced players... In my case, ive completed all 3 quests but a solar subclass on a newly made character was not unlocked. (character was made before completion) Considering this issue was removed from the TWAB's Known Issues section, it is clearly not being addressed. All I can do is hope that this does not persist until future light 3.0 subclasses.