1437016 - Mixed Content Blocker degrades UI and shows offending loads in console for other, unrelated tabs

Status: RESOLVED DUPLICATE of bug 1420680

(Core :: DOM: Security, defect)

Description

[Frederik Braun [:freddy]]

I don't have any great STR, but I've seen this a few times and seen reports on IRC and in other conversations.

Some websites get their UI degraded because of mixed content blocking. DevTools complain about loads for fonts or other things, that are not actually on the current page.

Turns out, those loads happen in a different tab and the window association has just gone awry.


I'm an avid user of pinned tabs and containers and I have a hunch that it might be related. But that's guesswork, so far. CCing jkt and mkaply as they've discussed this previously as well.

Comment 1

[Jonathan Kingston [:jkt] he/him]

I have both of those pinned tabs and containers. As stated it appears to be cross window issues landing into the wrong console; I have only noticed this with MCB warnings.

I got the following once on Googles Phishing reporting page (very likely this was a non container tab it was being reported on):

"Blocked loading mixed active content "http://alistapart.com/components/assets/fonts/franklin-itc-light.woff2"[Learn More]"

However it didn't for certain load this, Mike was also suggesting his was mixed active fonts too which might narrow it down.

Comment 2

[Frederik Braun [:freddy]]

Ah, yes. Someone also said something about multiple windows in the past..

Comment 3

[Mike Kaply [:mkaply]]

I wasn't using containers, but I definitely had more than one window up.

Comment 4

[Daniel Veditz [:dveditz]]

Seems to have been introduced with Stylo