Ported from GitHub issue #195

Affected Platforms

• Windows 10x64
• Windows 7x64
• macOS 10.15

Affected Versions

• Firefox Release 71.0
• Firefox Beta 71.0b12
• Firefox Nightly 72.0a1 (BuildID 20191127114233)

Prerequisites:

• Have the disable "DNSOverHTTPS" policy active.

• network.trr.mode is set to 5

• The DoH add-on is installed.

    {
    	"policies": {
    		"DNSOverHTTPS": {
    		"Enabled": false,
    		"ProviderURL": "https://mozilla.cloudflare-dns.com/dns-query",
    		"Locked": true
    		}
    	}
    }
  

Steps to reproduce:

• Open the browser with the profile from prerequisites.
• Disconnect from the internet.
• Reconnect to the internet.
• Navigate to about:telemetry and observe the events.
• Wait ~1min

Expected result:

Telemetry event shows "evaluateReason": "netChange"

Actual result:

Telemetry event shows "evaluateReason": "userModified"

Notes:

• The issue is reproducible with the 1.2.0rc2 version of the add-on.

This issue was still not fixed using v1.2.0rc5 of the add on. Screenshot of telemetry events.