That is very strange. Did you block all ads using that extreme test when going through the VPN like I did too then?
I didn't just disable Unbound, I uninstalled it, Unbound manager and x3mrouting too. I also deleted all custom scripts. Ad blocking worked for me after I did this. As soon as I reinstalled Unbound, it broke again.
Mine is now acting differently since this morning, I wonder if someone has read these posts and fixed something in the background? I'm now blocking all ads using the extreme test for both WAN and VPN. Are you now blocking ads using that test now too?
https://canyoublockit.com/extreme-test/
Another strange think I've notice is if you do the simple test on that site, ads are showing for both WAN and VPN:
https://canyoublockit.com/testing/
I highly doubt my VPN was blocking the ads, otherwise it would have blocked them using that simple test too.
I wonder if you're right, Diversion (with Unbound installed) not working properly for that site for some reason? But why and what other sites does it not work on?