Save state crashes when 3D acceleration is enabled

[eoftedal]

Process:               VirtualBoxVM [60994]
Path:                  /Applications/VirtualBox.app/Contents/Resources/VirtualBoxVM.app/Contents/MacOS/VirtualBoxVM
Identifier:            org.virtualbox.app.VirtualBoxVM
Version:               5.1.6 (5.1.6)
Code Type:             X86-64 (Native)
Parent Process:        VBoxSVC [60975]
Responsible:           VirtualBoxVM [60994]
User ID:               501

Date/Time:             2016-09-20 08:55:59.868 +0200
OS Version:            Mac OS X 10.11.6 (15G1004)
Report Version:        11
Anonymous UUID:        D9DBB08D-4C4D-8B25-6CC5-48A55E634305

Sleep/Wake UUID:       A19E6FC4-4C2A-4961-BD52-A4258770AA33

Time Awake Since Boot: 390000 seconds
Time Since Wake:       6400 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x00000000414b0000
Exception Note:        EXC_CORPSE_NOTIFY

VM Regions Near 0x414b0000:
-->
    __TEXT                 00000001057e2000-00000001057e9000 [   28K] r-x/rwx SM=COW  /Applications/VirtualBox.app/Contents/MacOS/VirtualBoxVM

Application Specific Information:
Performing @selector(_close:) from sender _NSThemeCloseWidget 0x7fce42ae37f0

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   org.qt-project.QtCoreVBox           0x000000010686e7a0 QHashData::free_helper(void (*)(QHashData::Node*)) + 64
1   org.qt-project.QtGuiVBox            0x0000000106ea28e5 QTextFormatCollection::~QTextFormatCollection() + 69
2   org.qt-project.QtGuiVBox            0x0000000106eba708 0x106d7e000 + 1296136
3   org.qt-project.QtGuiVBox            0x0000000106eba79e 0x106d7e000 + 1296286
4   org.qt-project.QtCoreVBox           0x00000001069e4201 QObject::~QObject() + 1841

[eoftedal]

crashlog

[Socratis]

Do you mind opening a thread in the forums so we can discuss the background of this? I really prefer it there, since the bug report is not "polluted" with back and forth discussions and secondly, more people in the forums, more eyes, more potential ideas and solutions.