1416569 - Firefox quantum rendering problems

Status: RESOLVED DUPLICATE of bug 1412090

(Core :: Security: Process Sandboxing, defect)

Description

[Manfred L.]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.89 Safari/537.36

Steps to reproduce:

Firefox quantum firefox-57.0-0.8.fc27. 

FF quantum is really fast but there are quite some web pages which gets rendered incorrectly. There is text missing. 


Actual results:

Simple example is: https://fedoramagazine.org/

It looks like this: https://imagebin.ca/v/3h0DrwkEyN2q

Anybody else having this?


Expected results:

The various articles listed in https://imagebin.ca/v/3h0DrwkEyN2q
 should have text. Just try going to https://fedoramagazine.org/ using the previous firefox 56

Comment 1

[Manfred L.]

Here I used google chrome because firefox quantum is currently unreliable on my system.

Comment 2

[Manfred L.]

This page: https://bugzilla.mozilla.org/show_bug.cgi?id=1416569 looks like follows: 
          https://imagebin.ca/v/3h3PFxPPutxg

Comment 3

[Kohei Yoshino [:kohei]]

Please make sure you have the latest graphics driver: https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

Comment 4

[Manfred L.]

I have the latest intel driver Fedora 27 offers: xorg-x11-drv-intel-2.99.917-31.20171025.fc27.x86_64

Comment 5

[Manfred L.]

Attachment: Troubleshooting Information.xhtml

I have started Firefox with a new profile and save the troubleshooting informatin which I have appended here:

Comment 6

[Manfred L.]

Problem is solved now:

For some reason I deinstalled an Opentype font which also contained some directories of woff and woff2 files. I didn't notice it before. Then I accidentally noticed that firefox works ok again.

Comment 7

[Jonathan Kew [:jfkthame]]

This is probably another example of sandbox-related font issues, like bug 1412090. Assuming this is correct, it should be fixed by the latest Nightly builds; a workaround on older versions (like the 57.0 release) is to set security.sandbox.content.level to 1 (or possibly 2?) in about:config, instead of the default level 3.

Comment 8

[Manfred L.]

Jonathan, thanks a lot for that.

Things are weird. When I had posted that it is solved, and later restarted Firefox the problem was there again. So I felt like being stupid or something similar.

Now when I set security.sandbox.content.level to 1 it seems (I'm cautious now with my wording) rendering works ok reliably.

Comment 9

[Jonathan Kew [:jfkthame]]

OK, that tends to confirm this is the same issue as bug 1412090; marking as a duplicate.

Comment 10

[Manfred L.]

I need to make a remark in my calendar to make sure I will set that value back to 3 some time in the future. 

Is there any estimation when the fix could arrive in the distros? In my case it is Fedora 27. If not I will check at beginning of December if it is fixed.

Comment 11

[Jonathan Kew [:jfkthame]]

Currently, the fix is on track for Firefox 59, but I'm requesting uplift to Firefox 58 as well.

Comment 12

[Manfred L.]

Thanks, good to know. I will make sure not to forget that security.sandbox.content.level change I made

Comment 13

[Manfred L.]

Just to let you know. 

Now, having installed firefox 58.0-3 in Fedora 57 and resetting security.sandbox.content.level to the default of 3 things are still fine. No problems detected so far.