User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.237 Safari/534.10 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 Crashed when dropping down the selects. When I relaunch my browser sometimes it says "We'll, this is embarassing" and on rare occasion, it will just open a window and _all_ of my tabs are gone. This issue only happens on FF 3.6.13 mac. I also tried in on the previous version 3.6.12 and still reproducible, this maybe reproducible on older minor releases. Note that this issue does not happen on FF 3.0 mac, FF3.5 mac and FF4.0b9 mac. This issue does not happen on windows. Reproducible: Always Steps to Reproduce: 1. Click the Submit button without fillin up anything (you'll see a text that those field are required on the right) 2. Fill up some input texts 3. Drop down one or all the selects Actual Results: Crashes the browser. It just quit without any messages. Expected Results: Drops down a blank list (in our real form we have options in there but this form is just for this bug report)

Note that this issue also happens on one of our customers and the workaround we gave them is by adding the code below: <style> span.mktInput { position: relative; } span.mktInput span.mktFormMsg { display: none; } span.mktError span.mktFormMsg { display: inline; } </style>

WORKSFORME on Linux Firefox 3.6.13, so this does seem mac-specific. Moving from "DOM: CSS Object Model" to "General", since it's unclear what code is involved with the crash right now (and it doesn't seem to be CSS-related). > Crashes the browser. It just quit without any messages. That suggests infinite recursion to me -- in my experience, that's been the most frequent causes of crashes that lack a crash-reporter dialog.

Actually this is a dup of the infamous bug 550392, and not really a crash but an OS-level assertion failure. Using the STR from comment #0, I can reproduce this "crash" with close to 100% reliability in FF 3.6.13 and current trunk code (testing on OS X 10.6.5).

Interestingly, though, I only "crash" in 32-bit mode. In 64-bit mode (in Minefield) the assertion appears in the Console, but the browser keeps running. So far I haven't yet tested on OS X 10.5.8.

I am running OS X 10.6.6. An interesting observation as well is I could not reproduce this issue on FF3.0 and 3.5.

Yes, I can also reproduce this "crash" on OS X 10.5.8 (where only 32-bit mode is available, even in Minefield) -- testing with FF 3.6.13 and Minefield. > I am running OS X 10.6.6. An interesting observation as well is I > could not reproduce this issue on FF3.0 and 3.5. And I don't "crash" (or see the assertion) in FF 3.0 or 3.5 either (on OS X 10.5.8). Yes this is interesting, and surely some kind of clue.