Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

After upgrading to 16.0.1, menu entries on the menu bar flash when they are clicked on.

  • 7 replies
  • 22 have this problem
  • Last reply by python1340

more options

It also occurs in any folder that I have in my Bookmarks Toolbar. Restarting in safe mode resolves the problem, but it returns after restarting normally. I also went through all of my Extensions and Plug-Ins disabling them individually and restarting after each, but I ended up with none of them enabled and the problem still exists.

Chosen solution

Try to disable hardware acceleration in Firefox.

Read this answer in context 👍 8

All Replies (7)

more options

Chosen Solution

Try to disable hardware acceleration in Firefox.

more options

Yep, that fixed it. Thanks! But I shouldn't have to do this. Hopefully it will be fixed in the next RC. Thanks again.


more options

You're welcome.

more options

I have deployed Firefox to about 30 company computers and they are all set up with the Mozilla Update Service. When these computers automatically update to 16.0.1, I will have to go around to each computer and fix every single one. Please please fix this next release and save me this headache.

more options

You can disable hardware acceleration via a mozilla.cfg file in the Firefox program folder.

  • C:\Program Files\Mozilla Firefox\
  • C:\Program Files (x86)\Mozilla Firefox\

You can do that with pref() or lockPref()
You can set these prefs as a start and add others if you need to initialize those as well.

pref("layers.accelerate-all", false);
pref("layers.acceleration.disabled", true);

Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify new (default) values.

Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift


You can use these functions in mozilla.cfg:

defaultPref();  // set new default value
pref();         // set pref, but allow changes in current session
lockPref();     // lock pref, disallow changes
more options

You are missing the point. As a system administrator, I installed Firefox company-wide with Mozilla Maintenance Service turned on. That means Firefox is automatically updated. If Mozilla releases a new version that breaks everyone's Firefox in my company, and I am forced to go around to EVERY computer and apply the fix, then I might just go Chrome this time, so I don't get burned again.

more options

What good is Mozilla Maintenance Service if I can't trust Mozilla to release automatic updates that won't render my company's browsers inoperable?