Charged Creepers use an additive material for their aura, but when placed over another additive aura, weird render errors occur.
Additive material in front of end portals (in respect of the player POV) completely hides them.
I've also noticed this error with making custom models and render controllers with specific materials to bones: additive material to the front (POV) completely hide the additive material behind.
Thank you for your report!
We're tracking this issue in MCPE-65798, so this ticket is being resolved and linked as a duplicate.
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