It's a glitch, same as the new subclass unlocked glitch. Honestly, bungie should just pull the game offline and focus strictly on their pve bugs. -blam!- the pvp players/cheaters, streamers, and everyone else we could all use a break from breathing in the dumpster fire smoke.

Ikora might have an exotic quest for new lights or one of the subclass starter sets to choose from. Zavala might have engrams you can grab on the top right. If not then he might have enhancement prisms as a reward you can't pick up because your full. Season pass might be again something you can't pickup because you're holding the max in your inventory. Deepsight harmonizers and Glimmer are the usual culprits.