BZ-1048230 - One time the variable history window is empty and another time it contains the changes

(cherry picked from commit 3904f53ae657dc85c5784ab1489597e4930580db)
BZ-1059534 - BigApp: Transaction Synchronization Exception listing human tasks

(cherry picked from commit 713dfa700795249731db70c81cd05cba7bc18ede)