AppCode 3.3.2 bundled JRE frequent freezes

I'm seeing pretty frequnt freezes in the new AppCode build, they seem to be related to autocompletion dialogs appearing in the UI. Each freeze seems to last around 1-2 seconds and locks up the entire IDE. Sometimes OS X displays the spining beachball, other times it doesn't show up.

The freezes seem to be coralated with the error in my system logs:

12/17/15 5:22:10.578 PM appcode[6289]: java.lang.NullPointerException
     at sun.lwawt.macosx.CAccessibility.getAccessibleIndexInParent(CAccessibility.java:287)
 
12/17/15 5:22:10.579 PM appcode[6289]: (
     0   CoreFoundation                      0x00007fff96848ae2 __exceptionPreprocess + 178
     1   libobjc.A.dylib                     0x00007fff8dfebf7e objc_exception_throw + 48
     2   CoreFoundation                      0x00007fff96848679 -[NSException raise] + 9
     3   JavaNativeFoundation                0x000000011cda86db JNFCallStaticIntMethod + 215
     4   libawt_lwawt.dylib                  0x000000011dcf5d4f +[JavaComponentAccessibility createWithAccessible:withEnv:withView:] + 76
     5   libawt_lwawt.dylib                  0x000000011dcf626f -[JavaComponentAccessibility accessibilityFocusedUIElement] + 194
     6   libawt_lwawt.dylib                  0x000000011dccb3fa -[AWTView accessibilityFocusedUIElement] + 156
     7   AppKit                              0x00007fff85ad7259 -[NSWindow(NSWindowAccessibility) accessibilityFocusedUIElement] + 118
     8   libawt_lwawt.dylib                  0x000000011dcf5fcd +[JavaComponentAccessibility postFocusChanged:] + 96
     9   Foundation                          0x00007fff86451d4b __NSThreadPerformPerform + 279
     10  CoreFoundation                      0x00007fff967585c1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
     11  CoreFoundation                      0x00007fff9674a41c __CFRunLoopDoSources0 + 556
     12  CoreFoundation                      0x00007fff9674993f __CFRunLoopRun + 927
     13  CoreFoundation                      0x00007fff96749338 CFRunLoopRunSpecific + 296
     14  HIToolbox                           0x00007fff8a1a3935 RunCurrentEventLoopInMode + 235
     15  HIToolbox                           0x00007fff8a1a376f ReceiveNextEventCommon + 432
     16  HIToolbox                           0x00007fff8a1a35af _BlockUntilNextEventMatchingListInModeWithFilter + 71
     17  AppKit                              0x00007fff853530ee _DPSNextEvent + 1067
     18  AppKit                              0x00007fff8571f943 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
     19  libosxapp.dylib                     0x000000011dd7d3aa -[NSApplicationAWT nextEventMatchingMask:untilDate:inMode:dequeue:] + 124
     20  AppKit                              0x00007fff85348fc8 -[NSApplication run] + 682
     21  libosxapp.dylib                     0x000000011dd7d14d +[NSApplicationAWT runAWTLoopWithApp:] + 156
     22  libawt_lwawt.dylib                  0x000000011dd0a417 -[AWTStarter starter:] + 905
     23  Foundation                          0x00007fff86451d4b __NSThreadPerformPerform + 279
     24  CoreFoundation                      0x00007fff967585c1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
     25  CoreFoundation                      0x00007fff9674a41c __CFRunLoopDoSources0 + 556
     26  CoreFoundation                      0x00007fff9674993f __CFRunLoopRun + 927
     27  CoreFoundation                      0x00007fff96749338 CFRunLoopRunSpecific + 296
     28  appcode                             0x00000001000013bf main + 357
     29  appcode                             0x0000000100001238 start + 52
     30  ???                                 0x0000000000000001 0x0 + 1
)

 

Followed by a few lines of this that may or may not be related

12/17/15 5:22:21.585 PM WindowServer[181]: _CGXRemoveWindowFromWindowMovementGroup: window 0x2851 is not attached to window 0x2852