Intermitant Failure to export PDF report

Katalon Studio
Version: 5.8.3
Build: 2

New Version available: 5.8.3

EMF Common
Version: 2.12.0.v20160420-0247
Build id: S201604200247

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applications based on simple class models.
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I am getting intermittent failure of the report export with the current version of Katalon.
I am also get application lock ups with Katalon and the only way to recover is to kill the process.

Looking forward to a fix