Run-time crash - due to leaked msi handle?

[yossiz-algotec]

We recently upgraded our installation project to InstallShield 2013 SP1 (from 2011)
Now the installation occasionally crashes (not often, but it happens).
The crash details are below.
The MSI log shows a couple of 'Leaked MSIHANDLE' notes.

This did not happen in previous versions of InstallShield.
Any idea?

Problem signature:
Problem Event Name: APPCRASH
Application Name: setup.exe_MyProduct
Application Version: 12.0.0.206
Application Timestamp: 51a6de39
Fault Module Name: ISSetup.dll
Fault Module Version: 20.0.0.496
Fault Module Timestamp: 524b9c23
Exception Code: c0000005
Exception Offset: 00039a72
OS Version: 6.3.9600.2.0.0.272.7
Locale ID: 1033
Additional Information 1: 5861
Additional Information 2: 5861822e1919d7c014bbb064c64908b2
Additional Information 3: 3a20
Additional Information 4: 3a20a93c34687143a5bf7d33f1cf3ccc

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[yossiz-algotec]

Apparently this issue relates to major ugprades.
There was a similar problem in InstallShield 2009, for example in this thread: http://community.flexerasoftware.com/showthread.php?185545-InstallScript-MSI-Projects-crash-when-performing-a-Major-Upgrade
A hotfix was released in order to resolve this issue.

Can we expect a hotfix for this issue for InstallShield 2013 SP1 as well?
or can someone offer some kind of workaround? Manual uninstall is not an option, since our upgrade process uses files and data from the version being upgraded.