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Stay away. I've tried clicking the X and "File > Exit", but it refuses to close and stays open in Task Mangler. Have to force close to open it again. This does not happen with 29.0.0.

It's either you or your OS (or maybe something else on your system). Mine closes without issue.

I am on FF 29.0.1.
I am also on Windows 8.1 (Update 1?)

Ugh. Despite vexing me all day with this behaviour, it now works as it's supposed to.

Of course it does...that was the designer's ultimate intent

Captain Ned wrote:

Stay away. I've tried clicking the X and "File > Exit", but it refuses to close and stays open in Task Mangler. Have to force close to open it again. This does not happen with 29.0.0.

Hasty judgement. Don't you think they would've noticed such a bug over the course of alpha, beta, and RC testing before releasing it to the general public?

Meadows wrote:

Captain Ned wrote:

Stay away. I've tried clicking the X and "File > Exit", but it refuses to close and stays open in Task Mangler. Have to force close to open it again. This does not happen with 29.0.0.

Hasty judgement. Don't you think they would've noticed such a bug over the course of alpha, beta, and RC testing before releasing it to the general public?

Are you saying that he imagined it?

just brew it! wrote:

Are you saying that he imagined it?

When one clicks on the Firefox icon and is greeted with the dialog box that says Firefox is already running (yet nowhere on the Task Bar) one digs deeper. This build is so old that its ghosts have ghosts. With any luck I can fix this issue over the ensuing weekend.

I find FF 29 and 29.0.1 to be quite sluggish in comparison to 28. It often slows to a crawl at random intervals especially when loading a new tab, switching tabs, or encountering a lot of elements on a webpage. It's frustrating when something gets worse that you frequently use like a browser.

Recommend giving Pale Moon a try. I am a long time Firefox user and thought I would never switch, but Pale Moon eliminates a lot of the quirks that Firefox has lately been plagued with.

http://www.palemoon.org/

29.0.0 worked fine for me in Windows but it behaved similarly to what the OP described on my MacBook - quitting had a 50/50 chance of the instance getting stuck "not responding" and needing a force quit. I'll be sticking with ESR releases from now on.

kikib wrote:

I find FF 29 and 29.0.1 to be quite sluggish in comparison to 28. It often slows to a crawl at random intervals especially when loading a new tab, switching tabs, or encountering a lot of elements on a webpage. It's frustrating when something gets worse that you frequently use like a browser.

The overall sluggishness was what originally convinced me to switch to Chrome/Chromium as my primary browser. It seemed like FF performance got better over the past couple of years though; if it is regressing again that's a shame.

Although I prefer Chrome/Chromium, I am back to using FF when I need to access the web from Linux at work. The corporate web filter/proxy does SSL certificate spoofing, and AFAICT Chrome/Chromium no longer provides any way to bypass the certificate check. I appreciate that they're trying to make things more secure, but they really should've retained the ability to load the page anyway if you acknowledge that you understand the risk.

Since the Firefox 29.0.0 update, I've been experiencing the hangs on close on Windows 7, and 8.1, and Ubuntu, Mint and CentOS.

On CentOS, I went back to their default ESR version. Everywhere else, I've edited the Firefox launch button so that instead of launching firefox directly, it first kills any existing firefox, then launches firefox. At first I thought is was caused by my extensions, but it happens even with none enabled.

This is rather annoying, and I'm considering moving to an ESR everywhere. Though I expect they'll admit/fix it eventually, and doesn't stop me from using it. Several attempts at bug reports, or reopening of old ones, have been made, but at the moment, the devs seem to be in denial.

I'm a light FF user and have noticed more instability since 29 dropped. I don't run without certain extensions, though, and I don't care enough to test it. Try turning extensions on and off & see if that helps.

https://support.mozilla.org/en-US/questions/1000376

It seems there's a bug in the "Clear History on Close" function. Mozilla is working on regression testing now.

EDIT: Sure enough. Uncheck that box on the History section of the Privacy tab and FF instantly disappears from Task Mangler on close. Recheck it and it stays in memory. I'll keep force-closing until the bug is patched.

Captain Ned wrote:

https://support.mozilla.org/en-US/questions/1000376

It seems there's a bug in the "Clear History on Close" function. Mozilla is working on regression testing now.

EDIT: Sure enough. Uncheck that box on the History section of the Privacy tab and FF instantly disappears from Task Mangler on close. Recheck it and it stays in memory. I'll keep force-closing until the bug is patched.

THANKS!! No hangs since I unchecked it. I had been averaging about 3 hangs in 5 times.

Captain Ned wrote:

https://support.mozilla.org/en-US/questions/1000376

It seems there's a bug in the "Clear History on Close" function. Mozilla is working on regression testing now.

EDIT: Sure enough. Uncheck that box on the History section of the Privacy tab and FF instantly disappears from Task Mangler on close. Recheck it and it stays in memory. I'll keep force-closing until the bug is patched.

Ah, that is why I haven't run into that bug. I'm running FF Beta (30 at the moment), by the way.

kikib wrote:

I find FF 29 and 29.0.1 to be quite sluggish in comparison to 28. It often slows to a crawl at random intervals especially when loading a new tab, switching tabs, or encountering a lot of elements on a webpage. It's frustrating when something gets worse that you frequently use like a browser.

I've noticed this too, but not very often. It usually happens when I get to the 12 windows and 125 tabs range, and it's been running for several days like that.

For me, this might be linked to something with Google Drive being one of those long running tabs, and I'd also recommend getting rid of Flash.

anybody else have garbled drop-down field menus in FF 29.0.1--not the menu bar, btw? i have googled and found others with the same problem, but the suggested solution is to disable hardware rendering which basically makes the web like 1998 so is not really a solution. i have just been living with it but it is annoying...happens on the remember password drop-down every time i login to a site.

Flatland_Spider wrote:

Ah, that is why I haven't run into that bug. I'm running FF Beta (30 at the moment), by the way.

Until FF29+ it wasn't a bug, thus the regression testing (i.e. did a new code change in one spot somehow break long-understood code in a stable bit far off from the new code tree?).

If only I could be paid as an alpha tester for the crap apps pushed on us by the Federal banking regulators. Not sure if any of them have ever made it to beta given the lack of support when things go pear-shaped.

Hopefully not too far off-topic, but I'm looking for a userChrome.css setting to reduce the spacing of the icons in the URL bar. Setting "Small Icons" in ClassicThemeRestorer is a bit too much and causes some other changes that I don't particularly want. The sizing/spacing is OK for 1440p and larger screens, but at 1080p or less the window needs to be too wide to leave enough room for the URL and search fields.

Captain Ned wrote:

Flatland_Spider wrote:

Ah, that is why I haven't run into that bug. I'm running FF Beta (30 at the moment), by the way.

Until FF29+ it wasn't a bug, thus the regression testing (i.e. did a new code change in one spot somehow break long-understood code in a stable bit far off from the new code tree?).

If only I could be paid as an alpha tester for the crap apps pushed on us by the Federal banking regulators. Not sure if any of them have ever made it to beta given the lack of support when things go pear-shaped.

I don't use the Clear History on Close option, which is why I haven't run into the bug.

Heh. Support is the one thing that the government doesn't seem to fund. There are several government agencies that the company I work for deals with, and they have some of the most antiquated, unfriendly systems for getting data...

kikib wrote:

I find FF 29 and 29.0.1 to be quite sluggish in comparison to 28. It often slows to a crawl at random intervals especially when loading a new tab, switching tabs, or encountering a lot of elements on a webpage. It's frustrating when something gets worse that you frequently use like a browser.

I uninstalled Flash on my work machine today, rather then just blocking it, and it has made a difference.