diff --git a/src/ccma/ui/options_dialog.py b/src/ccma/ui/options_dialog.py
index 5033ec9..3d8b682 100644
--- a/src/ccma/ui/options_dialog.py
+++ b/src/ccma/ui/options_dialog.py
@@ -86,7 +86,10 @@ class OptionsDialog(tk.Toplevel):
         self.mail_template_snippets: dict[str, str] = {}
         self.title("Optionen")
         self.transient(master.winfo_toplevel())
-        self.grab_set()
+        # Tk refuses a grab on a window that is not on screen yet ("window not
+        # viewable"), and this dialog builds enough tabs to still be unmapped here --
+        # so the grab waits for the window like it does in the other dialogs.
+        self.after_idle(self.grab_set)
         self.resizable(True, True)
         self._build_ui()
         self.bind("<Escape>", lambda _event: self.destroy())