I had made a portal in the nether after finding a suitable area to blast mine. Made a portal to over world, and while in the portal my hand and item held kept flickering in and out. Maybe this is a new portal mechanic but it made me feel like my game crashed. Happened going back in too.
Thank you for your report!
We're actually already tracking this issue at MCPE-52504, so I will resolve and link this ticket as a duplicate.
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