Extension tries to display .jar files as JSON

[TheSkullbot]

Bug :

• Trying to access to a .jar file URL activate the JSON viewer (and obviously with an unexpected token error because it's a Java archive and not JSON)

How to reproduce :

• Access some .jar file URL (like https://media.forgecdn.net/files/3060/564/RebornCore-1.16-4.4.2%2Bbuild.73.jar)
• The browser won't ask for action (either open or save) and the default action for this filetype will be ignored

Expected behavior :

• Don't treat .jar files as JSON and open the dialog or perform the configured action for this filetype

Versions :

• Firefox 81.0.1 (64 bits)
• JSON Lite 19.6.0

[lauriro]

$ curl -I https://media.forgecdn.net/files/3060/564/RebornCore-1.16-4.4.2%2Bbuild.73.jar
HTTP/1.1 200 OK
Content-Type: application/x-amz-json-1.0

JSON Lite kicks in when there is json in Content-Type header. Will think which workaround would be best for misconfigured servers.