[Bug 53898] New: Programmer's File Editor MDI window contents incorrectly refreshed after closing an MDI document

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53898

Bug ID: 53898
           Summary: Programmer's File Editor MDI window contents
                    incorrectly refreshed after closing an MDI document
           Product: Wine
           Version: 7.20
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 73439
  --> https://bugs.winehq.org/attachment.cgi?id=73439
Corrupted window.

I've been using Programmer's File Editor (PFE), a text editor from 1999, with
WINE, since the beginning of time.

There has always been a problem that when the editor has multiple MDI windows
open, and a single window has been maximized (so it fills the entire editor),
and that window is closed, the window which replaces it does not correctly
refresh the editor display - the content is visually garbled.

Minimizing and restoring the editor induces a correct refresh.

Screenshot attached of a garbled window, and then the same window after a
min-restore induced refresh (so you can more easily see the corruption).