The network panel shows Network requests with no status in Nightly

STR

1. Open a new blank browser tab
2. Open devtools and the network panel
3. Open the browser toolbox
4. Enter https://www.websocket.org/echo.html

AR
Multiple request in the network panel are missing their status

ER
The Status should be showing .

These errors show for each of the failing request in the browser console.

Feels like a regression

Honza

Regression window:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=d6713d75c647f4d5d5f6a85adfa146a1eeb705a5&tochange=b8c0746ee1995684b218bd85c6bd53bbc15ac44d

Looked into this with Alex, and this is likely related to early request missed before the NetworkObserver is initialized. This should likely be fixed when fission is enabled.

Set release status flags based on info from the regressing bug 1669545

The following exception visible in the Browser Console is related:

Exception { name: "NS_ERROR_FAILURE", message: "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsITraceableChannel.setNewListener]", result: 2147500037, filename: "resource://devtools/server/actors/network-monitor/network-observer.js", lineNumber: 1086, columnNumber: 0, data: null, stack: "_setupResponseListener@resource://devtools/server/actors/network-monitor/network-observer.js:1086:38\n_createNetworkEvent@resource://devtools/server/actors/network-monitor/network-observer.js:912:12\n_httpStopRequest@resource://devtools/server/actors/network-monitor/network-observer.js:409:14\nexports.makeInfallible/<@resource://devtools/shared/ThreadSafeDevToolsUtils.js:103:22\n", location: XPCWrappedNative_NoHelper }
ThreadSafeDevToolsUtils.js:82:13

Honza