I've encountered this happen more often in the Founts. After the encounter is over loot will simply not drop from the chest. This has been happening since the start of act 3 I've noticed. This glitch really should be high on the devs priority list, yet it's been there for weeks and I'm not even sure they're aware (it seems like thats the case anyway). Funny how a glitch that allows you to skip the 1st encounter in vespers host or other cheese methods that are beneficial to the player are worked on before most can blink, yet glitches like these are basically left without a care. The fact that an Eververse glitch will be patched within hours vs this negligence shows where bungie's priorities are.