diff --git a/src/widgets/ProgressDialog.cpp b/src/widgets/ProgressDialog.cpp
index a902fc866..cca81b77c 100644
--- a/src/widgets/ProgressDialog.cpp
+++ b/src/widgets/ProgressDialog.cpp
@@ -1159,6 +1159,11 @@ bool ProgressDialog::Create(const TranslatableString & title,
 
    wxWindow *parent = 
 #if defined(__WXMAC__),
+      // Bug 2703: In release builds, the progress dialog will fall behind
+      // the top level dialog (like effects dialogs). This does not happen
+      // in debug builds and I was not able to track down the reason. So,
+      // this is a workaround and should be reviewed as some point, like
+      // when upgrading to the next WX version.
       GetParentForModalDialog(mHadFocus, 0);
 #else
       GetParentForModalDialog(nullptr, 0);