Today around 4AM Central time US I completed the raid "Crota's End" on hard difficulty for the VERY FIRST time on my TITAN. The previous day I completed the raid twice in the same day on my HUNTER and WARLOCK. I received the GLOWHOO shader for my HUNTER and WARLOCK for completing the FIRST time. I placed the GLOWHOO shader that was on my HUNTER into the VAULT after deciding I wanted to see what the GLOWHOO shader looked like on my TITAN and when I completed the "Crota's End" raid on hard mode difficulty on my TITAN I did no receive the GLOWHOO shader even though It was my first hard mode difficulty "Crota's End" completion around 4AM Central US time. I do not know if this is intended or a bug but as I recall the GLOWHOO shader was rewarded for completion the "Crota's End" hard mode difficulty raid for the first time and I had not received it on my TITAN'S FIRST completion. My inventory was NOT FULL and I had at least ONE slot open.
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Since you had it on your Titan, you won't get it on that character. Same with the CE normal shader. Just having it on that character makes the game go "hey, this character has it already. No need to spam them with it" since a few complained about chatterwhite.