I was playing a survival world when I held down the 'e' key for opening the inventory, and after a second approximately, the inventory's UI started flashing. I actually don't know in what versions does it happens, but it happens to me on 21w03a.
MC-212917
inventory flashes when 'e' key is held down
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We're tracking this issue as MC-93437, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Won't Fix, which means this is considered a bug but won't be fixed. The description of that ticket or the comments might explain the rationale. Please do not leave a comment on the linked ticket.
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