diff --git a/lib/mpl_toolkits/mplot3d/art3d.py b/lib/mpl_toolkits/mplot3d/art3d.py
index 5df5c8271e7f..e18563a816d6 100644
--- a/lib/mpl_toolkits/mplot3d/art3d.py
+++ b/lib/mpl_toolkits/mplot3d/art3d.py
@@ -808,6 +808,7 @@ def patch_collection_2d_to_3d(col, zs=0, zdir='z', depthshade=True):
"""
if isinstance(col, PathCollection):
col.__class__ = Path3DCollection
+ col._offset_zordered = None
elif isinstance(col, PatchCollection):
col.__class__ = Patch3DCollection
col._depthshade = depthshade
diff --git a/lib/mpl_toolkits/mplot3d/tests/test_art3d.py b/lib/mpl_toolkits/mplot3d/tests/test_art3d.py
index 02d35aad0e4b..4ed48aae4685 100644
--- a/lib/mpl_toolkits/mplot3d/tests/test_art3d.py
+++ b/lib/mpl_toolkits/mplot3d/tests/test_art3d.py
@@ -1,6 +1,9 @@
+import numpy as np
+
import matplotlib.pyplot as plt
from matplotlib.backend_bases import MouseEvent
+from mpl_toolkits.mplot3d.art3d import Line3DCollection
def test_scatter_3d_projection_conservation():
@@ -36,3 +39,18 @@ def test_scatter_3d_projection_conservation():
assert contains is True
assert len(ind["ind"]) == 1
assert ind["ind"][0] == i
+
+
+def test_zordered_error():
+ # Smoke test for https://github.com/matplotlib/matplotlib/issues/26497
+ lc = [(np.fromiter([0.0, 0.0, 0.0], dtype="float"),
+ np.fromiter([1.0, 1.0, 1.0], dtype="float"))]
+ pc = [np.fromiter([0.0, 0.0], dtype="float"),
+ np.fromiter([0.0, 1.0], dtype="float"),
+ np.fromiter([1.0, 1.0], dtype="float")]
+
+ fig = plt.figure()
+ ax = fig.add_subplot(projection="3d")
+ ax.add_collection(Line3DCollection(lc))
+ ax.scatter(*pc, visible=False)
+ plt.draw()
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