This simple test pge demonstrates buggy behaviour descriped in this issue report bigskysoftware/htmx#2575

1. open https://gebeer.github.io/htmx_head-support/
2. click on "Go to About" button
3. observe DOM in dev tools

The head-support extensions swaps contents of the head tag on each request.

We can observe that also fragments of the head tag are appended into the defined target element.