https://bugs.winehq.org/show_bug.cgi?id=44265
--- Comment #2 from Nikolay Sivov bunglehead@gmail.com --- Created attachment 60086 --> https://bugs.winehq.org/attachment.cgi?id=60086 patch
This looks like a bug in some application component IPropertyPage - SetPageSite(NULL) releases our site instance, but doesn't reset its pointer, so later on Release() site is released again. This needs a simple interactive test to confirm that SetPageSite(NULL) is never called.