[Bug 48343] New: SharpDevelop slowdown after copy and pasting

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48343

Bug ID: 48343
           Summary: SharpDevelop slowdown after copy and pasting
           Product: Wine
           Version: 4.21
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 66080
  --> https://bugs.winehq.org/attachment.cgi?id=66080
wine 5.0-rc2 +seh,+timestamps

At some point after using SharpDevelop 5.1 and copy & pasting code in the
source editor SharpDevelop lags/slows down noticeable.
After a restart it works fine again.

Steps to reproduce:
- Install SharpDevelop 5.1 (requires dotnet45 and vcrun2008)
- open/create a file
- Copy and paste any text multiple times (usually it takes 10-25 times)

Dunno if related but when it lags this is printed to the log:
fixme:thread:NtQueryInformationThread ThreadIsIoPending info class not
supported yet

Tested wine: 4.21-staging and higher
OS: Ubuntu 18.04.3