Shields don't receive the enchanted glint when enchanted, although they DO support enchanting even in vanilla. GIF presenting the issue (also present as attachement): http://i.imgur.com/kSSnRAX.gifv
The gif was made in 1.11 but I can confirm it also happens in 1.11.2.
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Sorry, didn't see it. I guess you can delete it now.
Duplicate of MC-69683