(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=1, address=0x8)
  * frame #0: 0x00007fffadf91625 CoreGraphics`CGGStateSetAlpha + 13
    frame #1: 0x00007fffab7e848f AppKit`NSDrawWindowBackground + 188
    frame #2: 0x00007fffab7e83cc AppKit`-[NSFrameView drawWindowBackgroundRect:] + 48
    frame #3: 0x00007fffab7e82f5 AppKit`-[NSThemeFrame drawWindowBackgroundRect:] + 129
    frame #4: 0x00007fffab7e7bf9 AppKit`-[NSFrameView drawThemeContentFill:inView:] + 290
    frame #5: 0x00007fffab7e6aeb AppKit`-[NSFrameView drawRect:] + 1004
    frame #6: 0x00007fffab7e66f4 AppKit`-[NSThemeFrame drawRect:] + 280
    frame #7: 0x00007fffab730f99 AppKit`-[NSView _drawRect:clip:] + 2276
    frame #8: 0x00007fffab72fa93 AppKit`-[NSView _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 4870
    frame #9: 0x00007fffab72e2af AppKit`-[NSThemeFrame _recursiveDisplayRectIfNeededIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:topView:] + 334
    frame #10: 0x00007fffab72c6d8 AppKit`-[NSView _displayRectIgnoringOpacity:isVisibleRect:rectIsVisibleRectForView:] + 2452
    frame #11: 0x00007fffab727fca AppKit`-[NSView displayIfNeeded] + 1748
    frame #12: 0x00007fffab7278db AppKit`-[NSWindow displayIfNeeded] + 230
    frame #13: 0x00007fffabe87cb4 AppKit`___NSWindowGetDisplayCycleObserver_block_invoke.6228 + 277
    frame #14: 0x00007fffab7273b9 AppKit`__37+[NSDisplayCycle currentDisplayCycle]_block_invoke + 454
    frame #15: 0x00007fffb39cccc6 QuartzCore`CA::Transaction::run_commit_handlers(CATransactionPhase) + 46
    frame #16: 0x00007fffb3ad68ac QuartzCore`CA::Context::commit_transaction(CA::Transaction*) + 160
    frame #17: 0x00007fffb39cb7a1 QuartzCore`CA::Transaction::commit() + 475
    frame #18: 0x00007fffaba0a8b1 AppKit`__37+[NSDisplayCycle currentDisplayCycle]_block_invoke.31 + 323
    frame #19: 0x00007fffadb01de7 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    frame #20: 0x00007fffadb01d57 CoreFoundation`__CFRunLoopDoObservers + 391
    frame #21: 0x00007fffadae2b09 CoreFoundation`__CFRunLoopRun + 873
    frame #22: 0x00007fffadae2544 CoreFoundation`CFRunLoopRunSpecific + 420
    frame #23: 0x00007fffad041ebc HIToolbox`RunCurrentEventLoopInMode + 240
    frame #24: 0x00007fffad041cf1 HIToolbox`ReceiveNextEventCommon + 432
    frame #25: 0x00007fffad041b26 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 71
    frame #26: 0x00007fffab5d8a54 AppKit`_DPSNextEvent + 1120
    frame #27: 0x00007fffabd547ee AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2796
    frame #28: 0x00007fffab5cd3db AppKit`-[NSApplication run] + 926
    frame #29: 0x000000010616005d libqcocoa.dylib`___lldb_unnamed_symbol539$$libqcocoa.dylib + 2381
    frame #30: 0x00000001014dbd0e QtCore`QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 398
    frame #31: 0x00000001014e0621 QtCore`QCoreApplication::exec() + 369
    frame #32: 0x00000001000062ed pulseview`main(argc=<unavailable>, argv=<unavailable>) at main.cpp:334 [opt]
    frame #33: 0x00007fffc36b4235 libdyld.dylib`start + 1