And yes, they appear to have the same explosion damage as normal creepers when they explode, they only appear charged.
Can confirm on Nintendo Switch, I was on with my family and they were using a texture pack that I didn’t enable (or else it would have taken a long time to download) and every single creeper was charged.
I stumbled across the issue in the 1.21.81 hotfix yesterday, but I don’t see any information about the bug in the 1.21.90 changelog so I’m sure it still currently persists.