diff --git a/test/aprsme_web/live/map_live/integration_test.exs b/test/aprsme_web/live/map_live/integration_test.exs
index 28b0191..1375514 100644
--- a/test/aprsme_web/live/map_live/integration_test.exs
+++ b/test/aprsme_web/live/map_live/integration_test.exs
@@ -756,6 +756,107 @@ defmodule AprsmeWeb.MapLive.IntegrationTest do
       assert render_hook(view, "clear_and_reload_markers", %{})
     end
 
+    test ":initialize_replay reschedules itself when map_bounds is nil", %{conn: conn} do
+      {:ok, view, _html} = live(conn, "/", on_error: :warn)
+      render_hook(view, "map_ready", %{})
+
+      # Force map_bounds to nil so handle_info_initialize_replay hits the
+      # else-branch (line 1042) that schedules :initialize_replay later.
+      :sys.replace_state(view.pid, fn channel_state ->
+        inner_socket = channel_state.socket
+
+        new_socket = %{
+          inner_socket
+          | assigns:
+              inner_socket.assigns
+              |> Map.put(:map_bounds, nil)
+              |> Map.put(:historical_loaded, false)
+        }
+
+        %{channel_state | socket: new_socket}
+      end)
+
+      send(view.pid, :initialize_replay)
+      Process.sleep(20)
+      assert render(view) =~ "aprs-map"
+    end
+
+    test "process_bounds_update with out-of-bounds visible_packets exercises remove_markers_batch", %{conn: conn} do
+      {:ok, view, _html} = live(conn, "/?lat=33.0&lng=-96.0&z=10", on_error: :warn)
+      render_hook(view, "map_ready", %{})
+
+      # Seed visible_packets with packets outside the next-bounds region.
+      visible = %{
+        "FAR-0" => %{
+          sender: "FAR",
+          base_callsign: "FAR",
+          ssid: "0",
+          lat: 60.0,
+          lon: -120.0,
+          has_position: true,
+          received_at: DateTime.utc_now()
+        },
+        "ALSO-0" => %{
+          sender: "ALSO",
+          base_callsign: "ALSO",
+          ssid: "0",
+          lat: 70.0,
+          lon: -130.0,
+          has_position: true,
+          received_at: DateTime.utc_now()
+        }
+      }
+
+      :sys.replace_state(view.pid, fn channel_state ->
+        inner_socket = channel_state.socket
+
+        new_socket = %{
+          inner_socket
+          | assigns:
+              inner_socket.assigns
+              |> Map.put(:visible_packets, visible)
+              |> Map.put(:initial_bounds_loaded, true)
+        }
+
+        %{channel_state | socket: new_socket}
+      end)
+
+      # Send bounds that exclude the seeded packets — process_bounds_update
+      # should call remove_markers_batch with all of them as marker_ids.
+      send(view.pid, {:process_bounds_update, %{north: 34.0, south: 32.0, east: -95.0, west: -97.0}})
+      Process.sleep(50)
+      assert render(view) =~ "aprs-map"
+    end
+
+    test "{:load_rf_path_station_packets, _} with seeded packets builds and adds markers", %{conn: conn} do
+      packet_fixture(%{
+        sender: "RFST1",
+        base_callsign: "RFST1",
+        ssid: "0",
+        received_at: DateTime.utc_now(),
+        lat: Decimal.new("33.0"),
+        lon: Decimal.new("-96.0"),
+        has_position: true,
+        path: ""
+      })
+
+      packet_fixture(%{
+        sender: "RFST2",
+        base_callsign: "RFST2",
+        ssid: "0",
+        received_at: DateTime.utc_now(),
+        lat: Decimal.new("33.5"),
+        lon: Decimal.new("-96.5"),
+        has_position: true,
+        path: ""
+      })
+
+      {:ok, view, _html} = live(conn, "/?lat=33.0&lng=-96.0&z=12", on_error: :warn)
+      send(view.pid, {:load_rf_path_station_packets, ["RFST1", "RFST2"]})
+      Process.sleep(50)
+      assert render(view) =~ "aprs-map"
+    end
+
     test "{:packet_batch, _} at low zoom (untracked) triggers heat map branch", %{conn: conn} do
       {:ok, view, _html} = live(conn, "/?lat=33.0&lng=-96.0&z=6", on_error: :warn)
       render_hook(view, "map_ready", %{})