issue with "Block requests for missing resources"
"Cancel intercepted request if the required resource is not locally available."
the way this is worded I understood it as if only script requests are cancelled because those are the only resources that Decentraleyes makes "locally available". But it blocks all requests to any domain in the mappings object including fe the main_frame request to https://code.jquery.com/ (which happens to be the download page for older jQuery versions). Wouldn't it be enough to just block script requests to those domains for missing resources (and maybe XHR)?
If you don't want to change the code behind that option perhaps you could consider adding a new setting "Block requests for missing script resources"