boolean dtype regression (#46548)

Co-authored-by: JHM Darbyshire (iMac) <attack68@users.noreply.github.com>

doc/source/whatsnew/v1.4.2.rst

@@ -21,7 +21,7 @@ Fixed regressions
 - Fixed regression in :meth:`DataFrame.replace` when a replacement value was also a target for replacement (:issue:`46306`)
 - Fixed regression in :meth:`DataFrame.replace` when the replacement value was explicitly ``None`` when passed in a dictionary to ``to_replace`` (:issue:`45601`, :issue:`45836`)
 - Fixed regression when setting values with :meth:`DataFrame.loc` losing :class:`MultiIndex` names if :class:`DataFrame`  was empty before (:issue:`46317`)
--
+- Fixed regression when rendering boolean datatype columns with :meth:`.Styler` (:issue:`46384`)
 
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pandas/tests/io/formats/style/test_format.py

@@ -434,3 +434,11 @@ def test_1level_multiindex():
     assert ctx["body"][0][0]["is_visible"] is True
     assert ctx["body"][1][0]["display_value"] == "2"
     assert ctx["body"][1][0]["is_visible"] is True
+
+
+def test_boolean_format():
+    # gh 46384: booleans do not collapse to integer representation on display
+    df = DataFrame([[True, False]])
+    ctx = df.style._translate(True, True)
+    assert ctx["body"][0][1]["display_value"] is True
+    assert ctx["body"][0][2]["display_value"] is False