Shield glitch is shown in the attached video. Look at the shield icon in the offhand slot. The glitch occurs in all worlds once it happens the first time. The shield can be fixed by rebooting the game.
Video includes 1st, 2nd, and 3rd person perspectives.
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Unfortunately, I do not know how to reproduce this bug.
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We're tracking this issue in MC-250400, so this ticket is being resolved and linked as a duplicate.
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