Grok 4 replied with this correct response:

Working on it...

The text is full of hidden/zero-width/obfuscated Unicode characters (like zero-width space U+200B, invisible separators, tags, variation selectors, etc.) that are used to bypass filters or just to troll.

After stripping all the invisible and non-printing junk, the actual visible message is:

*What*

That's it. The rest is just noise.