[Bug 48695] New: Script editor (AvalonEdit) for Construction Set Extender creates error windows and doesn't display text

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48695

Bug ID: 48695
           Summary: Script editor (AvalonEdit) for Construction Set
                    Extender creates error windows and doesn't display
                    text
           Product: Wine
           Version: 5.3
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 66568
  --> https://bugs.winehq.org/attachment.cgi?id=66568
Info from exception dialog box and wine log

Running the Construction Set Extender (CSE) for Oblivion
(https://www.nexusmods.com/oblivion/mods/36370/?) and trying to use the script
editor (provided by AvalonEdit https://github.com/icsharpcode/AvalonEdit)
displays an error message but lets me continue. Continuing does allow the
editor to work, but no text is displayed and the window can't be resized.