commit 33cf312a73247ce6036e94ebe06d18da436dfe7e
Author:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
AuthorDate: Fri Aug 6 15:12:40 2021 +0200
Commit:     ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
CommitDate: Fri Aug 6 15:12:40 2021 +0200

    Fix problem in native file chooser with macOS 12 "Monterey" (beta).

 src/Fl_Native_File_Chooser_MAC.mm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git src/Fl_Native_File_Chooser_MAC.mm src/Fl_Native_File_Chooser_MAC.mm
index 8cbd3bb..eb09f1c 100644
--- src/Fl_Native_File_Chooser_MAC.mm
+++ src/Fl_Native_File_Chooser_MAC.mm
@@ -627,8 +627,8 @@ int Fl_Quartz_Native_File_Chooser_Driver::runmodal()
       __block NSInteger complete = -1;
       [_panel beginSheetModalForWindow:[NSApp mainWindow] completionHandler:^(NSInteger returnCode) {
         complete = returnCode; // this block runs after OK or Cancel was triggered in file dialog
-      }]; // this message returns immediately and begins the file dialog as a sheet
-      while ([_panel isVisible]) Fl::wait(100); // loop until end of file dialog
+      }]; // 10.6 this message returns immediately and begins the file dialog as a sheet
+      while (complete == -1) Fl::wait(100); // loop until end of file dialog
       retval = complete;
     } else {
       retval = [_panel runModal];