diff --git a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
index 6a9612e73f8..044a2826866 100644
--- a/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
+++ b/src/plugins/platforms/cocoa/qcocoafiledialoghelper.mm
@@ -85,21 +85,29 @@ typedef QSharedPointer<QFileDialogOptions> SharedPointerFileDialogOptions;
         QString selectedVisualNameFilter = m_options->initiallySelectedNameFilter();
         m_selectedNameFilter = [self findStrippedFilterWithVisualFilterName:selectedVisualNameFilter];
 
-        // Explicitly show extensions if we detect a filter
-        // that has a multi-part extension. This prevents
-        // confusing situations where the user clicks e.g.
-        // 'foo.tar.gz' and 'foo.tar' is populated in the
-        // file name box, but when then clicking save macOS
-        // will warn that the file needs to end in .gz,
-        // due to thinking the user tried to save the file
-        // as a 'tar' file instead. Unfortunately this
-        // property can only be set before the panel is
-        // shown, so we can't toggle it on and off based
-        // on the active filter.
         m_panel.extensionHidden = [&]{
             for (const auto &nameFilter : m_nameFilterDropDownList) {
                  const auto extensions = QPlatformFileDialogHelper::cleanFilterList(nameFilter);
                  for (const auto &extension : extensions) {
+                    // Explicitly show extensions if we detect a filter
+                    // of "all files", as clicking a single file with
+                    // extensions hidden will then populate the name
+                    // field with only the file name, without any
+                    // extension.
+                    if (extension == "*"_L1 || extension == "*.*"_L1)
+                        return false;
+
+                    // Explicitly show extensions if we detect a filter
+                    // that has a multi-part extension. This prevents
+                    // confusing situations where the user clicks e.g.
+                    // 'foo.tar.gz' and 'foo.tar' is populated in the
+                    // file name box, but when then clicking save macOS
+                    // will warn that the file needs to end in .gz,
+                    // due to thinking the user tried to save the file
+                    // as a 'tar' file instead. Unfortunately this
+                    // property can only be set before the panel is
+                    // shown, so we can't toggle it on and off based
+                    // on the active filter.
                     if (extension.count('.') > 1)
                         return false;
                  }