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Created attachment 8539 [details]
output of mono --trace TestFC.exe starting from button click
Steps to reproduce it:
1. Create a GTK# project
2. Add a table container to the window and place a button inside
3. Create method OnButtonClicked ... with following content:
Gtk.FileChooserDialog = new Gtk.FileChooserDialog("Foo", this, FileChooserAction.Open);
4. When I run that code in Xamarin Version 5.5.2 everything works well.
Now I want to run the application via mono command prompt:
-> the application hangs on button click
This happens with "Mono for Windows 3.2.3".
When I install an older version (2.10.9) everything goes well.
Operating system: Windows 7 Professional SP 1
Maybe similar to this: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1182036
in Mono 3.0.10 everything works well