Had a ton of issues with the original Cree bulbs. They underglued the glass bulb and it came off with thermal cycling. They also put the LEDs on a metal core PCB they bent into ~10-gon tower. On the bends, the traces apparently would crack which led to overheating and a burn spot.

Cree is now no more; the bulbs are just a brand for FEIT who imports the same unreliable Chinese white-label bulbs.