Firefox 47 crashing a few seconds after launch by Selenium 2.53.0 on OSX 10.11.5

[samyun]

Meta -

OS: OSX 10.11.5
Selenium Version:
2.53.0
Browser:
Firefox
Browser Version:
47.0

Expected Behavior -

Firefox doesn't crash shortly after launch.

Actual Behavior -

Shortly after webdriver.Firefox() is called, Firefox is launched. Sometimes almost immediately, sometimes after first URL is navigated to, Firefox crashes, and the following problem report comes up:

    Process:               firefox-bin [50402]
    Path:                  /Applications/Firefox.app/Contents/MacOS/firefox-bin
    Identifier:            org.mozilla.firefox
    Version:               47.0 (4716.6.4)
    Code Type:             X86-64 (Native)
    Parent Process:        Python [50397]
    Responsible:           Terminal [25432]
    User ID:               501

    Date/Time:             2016-06-07 16:08:22.955 -0700
    OS Version:            Mac OS X 10.11.5 (15F34)
    Report Version:        11
    Anonymous UUID:        FB1ED8A9-3A61-DC92-F91C-55B2A620E6CF

    Sleep/Wake UUID:       84C91FD4-D04B-41C6-995F-9BE9447F3B85

    Time Awake Since Boot: 23000 seconds
    Time Since Wake:       6500 seconds

    System Integrity Protection: enabled

    Crashed Thread:        7  Socket Thread

    Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
    Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000

    VM Regions Near 0:
    --> 
        __TEXT                 0000000100000000-0000000100004000 [   16K] r-x/rwx SM=COW  /Applications/Firefox.app/Contents/MacOS/firefox-bin

    Thread 0:: Dispatch queue: com.apple.main-thread
    0   libsystem_kernel.dylib          0x00007fff8cb84f72 mach_msg_trap + 10
    1   libsystem_kernel.dylib          0x00007fff8cb843b3 mach_msg + 55
    2   com.apple.CoreFoundation        0x00007fff817a81c4 __CFRunLoopServiceMachPort + 212
    3   com.apple.CoreFoundation        0x00007fff817a768c __CFRunLoopRun + 1356
    4   com.apple.CoreFoundation        0x00007fff817a6ed8 CFRunLoopRunSpecific + 296
    5   com.apple.HIToolbox             0x00007fff84901935 RunCurrentEventLoopInMode + 235
    6   com.apple.HIToolbox             0x00007fff8490176f ReceiveNextEventCommon + 432
    7   com.apple.HIToolbox             0x00007fff849015af         _BlockUntilNextEventMatchingListInModeWithFilter + 71
    8   com.apple.AppKit                0x00007fff927eddf6 _DPSNextEvent + 1067
    9   com.apple.AppKit                0x00007fff927ed226 -[NSApplication         _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
    10  XUL                             0x0000000102eea262 0x1012b6000 + 29573730

Steps to reproduce -

Call Firefox webdriver, crashes shortly after.

[lukeis]

duplicate of #2110