Ciprian Georgiu, Desktop QA Reporter
	Description • 6 years ago

[Affected versions]:
- latest Nightly 60.0a1 (2018-02-14)

[Affected platforms]:
- macOS 10.13
- Mac OS X 10.11.6
- Ubuntu 16.04 x64

[Steps to reproduce]:
1. Launch Firefox.
2. Login to https://www.facebook.com/.
3. Access the following link https://apps.facebook.com/169545139744270 and click on "Run Adobe Flash".

[Expected result]:
- The game loads properly.

[Actual result]:
- The game stops loading at 99%.

[Regression range]:
- This appear to be a recent regression, I will follow up with one as soon as possible.

[Additional notes]:
- Windows is not affected by this issue
- the Flash version installed on these machines is 28.0 r0

	Emil Ghitta, QA [:emilghitta]
	Comment 1 • 6 years ago

Hi Jonathan,

It seems that mozregression pointed out Bug 1190623.

Last good revision: e9c3a7b8062a9bdd6d4b440cb39f146df47c04b0
First bad revision: 1ba25bdb87550c98e011c0af9d0933429b758961

Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=e9c3a7b8062a9bdd6d4b440cb39f146df47c04b0&tochange=1ba25bdb87550c98e011c0af9d0933429b758961


Can you please have a look into this?

Thanks!

	Jonathan Kingston [:jkt] he/him
	Comment 2 • 6 years ago

This is intentional breakage, it will only impact nightly and early beta releases.

Users of Nightly who want to use sites like this should flip "security.mixed_content.block_object_subrequest" pref in about:config.

	April King [:April]
	Comment 3 • 6 years ago

Alternatively (or additionally), ask the developers of the app to change it from using HTTP to using HTTPS.  :)

	Jonathan Kingston [:jkt] he/him
	Comment 4 • 6 years ago

Also I forgot:

Clicking the (i) icon in the URL bar
You should see: "Firefox has blocked parts of this page that are not secure"
Click the right arrow
Click "Disable protection for now"

Please be careful when using this mode though as it will allow insecure scripts too.

	Liz Henry (:lizzard) (relman/hg->git project)
	Comment 5 • 6 years ago

From comment 2, sounds like we don't intend to fix this and it won't be happening on release, at least not for a while.