Hi @RoxyRoxyRoxy, thanks so much for the reply.
To keep it simple without messing with risky websites, let's reproduce the issue using the "AdGuard Social Media filter" that can be found here: https://filters.adtidy.org/extension/ublock/filters/4.txt
In this filter, "platform.tumblr.com/v1/share" is blocked. After adding the AdGuard filter using "+" and pressing the "Update Now" button, we see the URL is correctly blocked:

Now let's completely close Orion and reopen it. If we then try to access "platform.tumblr.com/v1/share" again, the URL will load like if it wasn't in any content blocker lists:

Please let me know if you need more information.