With Vibrant Visuals enabled, shields with banners render incorrectly. For example, you can see the shield's bolts even with a banner over them, or in first-person view the shield appears completely grey.The screenshot are the comparisons
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Hi!
Thank you for your report!
We're already tracking this issue atMCPE-232638 , so I will resolve and link this ticket as a Duplicate.
I suggest also to browse through the main issue for potential fixes.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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My friend has a version of this where his shield is bright white