Cannot control (some) websites' Safari content blocking

I use multiple content blockers on Safari, the excellent Hush and Wipr, and Malwarebytes Malware Blocker and Scam Blocker.

All is generally fine, except on some trusted websites, I cannot turn them off.

Like in the screenshot - three places to turn off content blockers, but when I untick them, they re-tick themselves.

If I turn off ALL content blockers in Extensions, nothing changes, I still cannot set web pages to NOT use content blockers on a per-page basis.

All software is latest version.

Any suggestions?

Thanks.