EM App: Two Overlapping Status Windows - FIXED

em/ui.py

@@ -590,8 +590,8 @@ def _build_main_plot_area():
         classes="mb-1 flex-grow-1 d-flex flex-column",
         style="min-height: 0;",
     ):
-        # Running indicator
-        with vuetify3.VContainer(v_if="is_running", fluid=True, classes="fill-height d-flex flex-column align-center justify-center"):
+        # Running indicator - only for non-QPU/non-SVE backends
+        with vuetify3.VContainer(v_if="is_running && backend_type !== 'QPU' && !(backend_type === 'Simulator' && selected_simulator === 'Statevector Estimator')", fluid=True, classes="fill-height d-flex flex-column align-center justify-center"):
             vuetify3.VProgressCircular(indeterminate=True, size=64, color="primary")
             vuetify3.VCardSubtitle("Running simulation...", classes="mt-4")