https://bugs.winehq.org/show_bug.cgi?id=45199
--- Comment #14 from Lukáš Krejčí lskrejci@gmail.com --- OK, I was able to get the crash in Microsoft Word 2010 and it looks like it's for the same reason I described in my previous comments.
These functions (at least) are hot patched, probably by mso.dll: SysFreeString VariantChangeType VariantClear
Again, enabling WINEDEBUG=relay makes the application work with unmodified Wine 3.9 on Arch Linux.