SoapUI Locks up on screen resize

I've had this issue for quite a while.  If I try to resize a window in SoapUI while I'm running a long SOAP Request sometimes SoapUI will freeze.  I'm using the latest version but I've seen this issue since version 3.x

PID: 1292
Host: localhost
Main class: C:.Program
Arguments: Files\SmartBear\SoapUI-5.2.1\bin\SoapUI-5.2.1.exe

JVM: Java HotSpot(TM) 64-Bit Server VM (24.55-b03, mixed mode)
Java: version 1.7.0_55, vendor Oracle Corporation
Java Home: c:\program files\smartbear\soapui-5.2.1\jre
JVM Flags: <none>
-Dexe4j.semaphoreName=Local\c:_program_files_smartbear_soapui-5.2.1_bin_soapui-5.2.1.exe0
-Dexe4j.isInstall4j=true
-Dexe4j.moduleName=C:\Program Files\SmartBear\SoapUI-5.2.1\bin\SoapUI-5.2.1.exe
-Dexe4j.tempDir=
-Dexe4j.unextractedPosition=0
-Djava.library.path=C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\RSA SecurID Token Common;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\ThinkPad\Bluetooth Software\;C:\Program Files\ThinkPad\Bluetooth Software\syswow64;C:\Program Files\Puppet Labs\Puppet\bin;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files\TortoiseSVN\bin;;C:\Program Files\Docker Toolbox;c:\program files\smartbear\soapui-5.2.1\jre\bin
-Dexe4j.consoleCodepage=cp0
-Dinstall4j.launcherId=64
-Dinstall4j.swt=false
-XX:MinHeapFreeRatio=20
-XX:MaxHeapFreeRatio=40
-Xms128m
-Xmx1000m
-Dsoapui.properties=soapui.properties
-Dsoapui.home=C:\Program Files\SmartBear\SoapUI-5.2.1/bin
-Dsoapui.ext.libraries=C:\Program Files\SmartBear\SoapUI-5.2.1/bin/ext
-Dsoapui.ext.listeners=C:\Program Files\SmartBear\SoapUI-5.2.1/bin/listeners
-Dsoapui.ext.actions=C:\Program Files\SmartBear\SoapUI-5.2.1/bin/actions
-Dwsi.dir=C:\Program Files\SmartBear\SoapUI-5.2.1/wsi-test-tools
-Djava.library.path=C:\Program Files\SmartBear\SoapUI-5.2.1/bin
-Djava.util.Arrays.useLegacyMergeSort=true
-splash:SoapUI-Spashscreen.png 

I've attached a thread dump after the lock.  There is a UI thread that is blocked.