https://bugs.winehq.org/show_bug.cgi?id=44121
--- Comment #10 from Reinhold reinhold.hoffmann@hotmail.com --- I did some detailled analysis by comparing (Windows XP, 7, 8, 8.1, 10, Wine 2.0.3) vs. (Wine 2.22).
In a nutshell: ============= A result of the bug is that in Wine 2.22 BEFORE the installation timepoint of the CustomAction "Install" is reached the Registry is already fully updated as if the product would be fully installed. In (Windows XP, 7, 8, 8.1, 10, Wine 2.0.3) the Registry is updated BETWEEN the installation timepoint of CustomAction Install and CustomAction Commit.
I did the tests with the msi demo file of bug 41361 which stops at the various point.
Please find in the zip file attached all detailed information. Please read the screenshot files from 1...8. I hope that I am able to provide help withthis analysis for the resolution.