Firefox: logs().get( "browser" ) doesn't show console errors?

I’m trying to save the console logs after each test but having some problems with Firefox. With a test like:

describe("protractor/webdriver", function() {
    it("should be able to get browser logs", function() {
        browser.get("https://angularjs.org");

        browser.executeScript("console.log('Nothing to see here - move along.')");
        browser.executeScript("console.warn('This is your first warning!')");
        browser.executeScript("console.error('This is serious!!!')");

        browser.driver.manage().logs().get( "browser" ).then(function( logsEntries ) {
            logsEntries.forEach( (item) => {
                console.log( "LOG LEVEL:", item.level.name, item.message );
            });
        });
    });
});

For Chrome I get the result nicely:

[chrome #1] LOG LEVEL: WARNING console-api 240:41 This is your first warning!
[chrome #1] LOG LEVEL: SEVERE console-api 240:41 This is serious!!!

But Firefox only returns “Internal” warnings (CSS parse):

[firefox #2] LOG LEVEL: WARNING Unknown property 'zoom'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Unknown property 'user-select'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Unknown property 'zoom'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Error in parsing value for 'background-image'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Error in parsing value for 'background-image'.  Declaration dropped.
[firefox #2] LOG LEVEL: WARNING Expected media feature name but found '-webkit-min-device-pixel-ratio'.

[sundeep-gupta]

I am having the same issue with selenium 2.53.1 and firefox 45.3ESR

[dcoraboeuf]

Same issue in my case, with the same versions. Still looking for a solution, even a workaround, since having the console after the tests have run is very precious for analysis of failures. I’m using Firefox because I have to support different OS and this was the easiest to support.