confusedbloke

We'll keep the address blocked. If you want to allow access at your own risk, you can add the blocked address to the list of allowed addresses:

It appears to me Eset is detecting something on the captcha web page and blocking it. My experience with such an occurrence is there might be other malware attempting to be served up from such a web page. So proceeding to enter data, etc. on that web page is done at your own peril.
What you can try is suspending uBlock for that web page and observing what Eset detects on the web page.

I'll look into it, however, I'm afraid that without unblocking the aggressive ad domains it won't be possible.