#8 Breaks Multi Dictionary Lookup

The balloon tips are not displayed correctly (usually plain text is appended at the bottom of a website). With "multidict" set in exposed domains (this is the way I am willing to use it) it still doesn't look quite right (misplaced balloon, no icon). Tested on clean firefox 49.0.1 installation. However when I load the extracted (form xpi) extension via about:debugging it miraclously works just fine (of course with the "multidict" domain set) :/ https://addons.mozilla.org/en-US/firefox/addon/multi-dictionary-lookup/ Thank you sir for your great work.

Everyone please see: [wiki/FAQ; Known-issues](https://notabug.org/desktopd/no-resource-uri-leak/wiki/FAQ%3B-Known-issues)