Copying unicode symbols from Firefox address bar as is
Solution 1:
The setting was replaced with browser.urlbar.decodeURLsOnCopy in Firefox 53+. Set it to true.
For copying in Firefox on Android see https://android.stackexchange.com/q/224951/17612
Solution 2:
Try setting the network.standard-url.escape-utf8 option via about:config.
Possible values and their effects:
-
true- Escape UTF-8 URLs. (Default) -
false- Do not escape UTF-8 URLs.