diff --git a/lib/matplotlib/pyplot.py b/lib/matplotlib/pyplot.py
index 2120a0120749..31719b458807 100644
--- a/lib/matplotlib/pyplot.py
+++ b/lib/matplotlib/pyplot.py
@@ -215,12 +215,6 @@ def _get_backend_mod():
         # will (re)import pyplot and then call switch_backend if we need to
         # resolve the auto sentinel)
         switch_backend(dict.__getitem__(rcParams, "backend"))
-        # Just to be safe.  Interactive mode can be turned on without calling
-        # `plt.ion()` so register it again here.  This is safe because multiple
-        # calls to `install_repl_displayhook` are no-ops and the registered
-        # function respects `mpl.is_interactive()` to determine if it should
-        # trigger a draw.
-        install_repl_displayhook()
     return _backend_mod
 
 
@@ -311,6 +305,10 @@ class backend_mod(matplotlib.backend_bases._Backend):
     # See https://github.com/matplotlib/matplotlib/issues/6092
     matplotlib.backends.backend = newbackend
 
+    # make sure the repl display hook is installed in case we become
+    # interactive
+    install_repl_displayhook()
+
 
 def _warn_if_gui_out_of_main_thread():
     if (_get_required_interactive_framework(_get_backend_mod())
diff --git a/lib/matplotlib/tests/test_pyplot.py b/lib/matplotlib/tests/test_pyplot.py
index 0105c6f22d47..b376c1b54af3 100644
--- a/lib/matplotlib/tests/test_pyplot.py
+++ b/lib/matplotlib/tests/test_pyplot.py
@@ -335,3 +335,17 @@ def test_fallback_position():
     axtest = plt.axes([0.2, 0.2, 0.5, 0.5], position=[0.1, 0.1, 0.8, 0.8])
     np.testing.assert_allclose(axtest.bbox.get_points(),
                                axref.bbox.get_points())
+
+
+def test_pylab_integration():
+    IPython = pytest.importorskip("IPython")
+    mpl.testing.subprocess_run_helper(
+        IPython.start_ipython,
+        "--pylab",
+        "-c",
+        ";".join((
+            "import matplotlib.pyplot as plt",
+            "assert plt._IP_REGISTERED is not None",
+        )),
+        timeout=60,
+    )