[Bug 47982] New: Open File dialog has no FS widget in QT5 application (IDA Pro)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=47982

Bug ID: 47982
           Summary: Open File dialog has no FS widget in QT5 application
                    (IDA Pro)
           Product: Wine
           Version: 4.18
          Hardware: x86-64
                OS: Mac OS X
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]

Created attachment 65498
  --> https://bugs.winehq.org/attachment.cgi?id=65498
screenshot of the issue

The application is IDA Pro (7.3, but tested all versions since 7.0).
While it works pretty well on wine stable, all devel and staging versions are
affected by a regression bug impairing loading or saving files.

Every time a modal dialog is opened, the widget to browse the file system is
not displayed (OK and Cancel buttons are shown though). The application relies
on QT5, and I suspect wine does not play well with it.

See attachment for a screenshot.