Charged Creepers spawning anomaly

I have the same problem. I tested it out in creative and survival and can definitely say, that the exlosion is a normal creepers one, so it is only a graphical bug. This is btw. not related to the world seed, so you have creepers looking like charged creepers in every world you'll play.

I forgot to tell, i'm playing on PS5, so it's not just on iOS

In my world, they don’t explode normally. Most of the time, they create powerful explosions.

I think I figured out the reason. I noticed that it happened after enabling the Minecraft texture update (beta) in the resource packs. After disabling it, the issue was completely resolved.

This issue is being tracked at MCPE-217361.