diff --git a/packages/flutter/lib/src/material/input_border.dart b/packages/flutter/lib/src/material/input_border.dart
index b9d4d8e1e7..af6508f232 100644
--- a/packages/flutter/lib/src/material/input_border.dart
+++ b/packages/flutter/lib/src/material/input_border.dart
@@ -476,14 +476,14 @@ class OutlineInputBorder extends InputBorder {
 
     // Draw top border from top left corner to gap start.
     if (start > scaledRRect.tlRadiusX) {
-      path.lineTo(scaledRRect.left + start, scaledRRect.top);
+      path.lineTo(start, scaledRRect.top);
     }
 
     // Draw top border from gap end to top right corner and draw top right corner.
     const double trCornerArcStart = (3 * math.pi) / 2.0;
     const double trCornerArcSweep = cornerArcSweep;
     if (start + extent < outerWidth - scaledRRect.trRadiusX) {
-      path.moveTo(scaledRRect.left + start + extent, scaledRRect.top);
+      path.moveTo(start + extent, scaledRRect.top);
       path.lineTo(scaledRRect.right - scaledRRect.trRadiusX, scaledRRect.top);
       if (scaledRRect.trRadius != Radius.zero) {
         path.addArc(trCorner, trCornerArcStart, trCornerArcSweep);
diff --git a/packages/flutter/test/material/input_decorator_test.dart b/packages/flutter/test/material/input_decorator_test.dart
index 6088f60b32..33a9d894b7 100644
--- a/packages/flutter/test/material/input_decorator_test.dart
+++ b/packages/flutter/test/material/input_decorator_test.dart
@@ -1707,6 +1707,74 @@ void main() {
       );
     });
 
+    // Regression test for https://github.com/flutter/flutter/issues/159942.
+    testWidgets('OutlineBorder does not overlap with the label at the default radius', (WidgetTester tester) async {
+      Widget buildFrame(TextDirection textDirection) {
+        return MaterialApp(
+          home: Scaffold(
+            body: Container(
+              padding: const EdgeInsets.all(16.0),
+              alignment: Alignment.center,
+              child: Directionality(
+                textDirection: textDirection,
+                child: const RepaintBoundary(
+                  child: InputDecorator(
+                    isFocused: true,
+                    decoration: InputDecoration(
+                      labelText: labelText,
+                      border: OutlineInputBorder(
+                        gapPadding: 0.0,
+                      ),
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        );
+      }
+
+      await tester.pumpWidget(buildFrame(TextDirection.ltr));
+      Rect labelRect = getLabelRect(tester);
+      RenderBox borderBox = InputDecorator.containerOf(tester.element(findBorderPainter()))!;
+      expect(findBorderPainter(), paints
+        ..save()
+        ..path(
+          // The points of the label edge should be part of the border.
+          includes: <Offset>[
+            borderBox.globalToLocal(labelRect.centerLeft),
+            borderBox.globalToLocal(labelRect.centerRight),
+          ],
+          // The points inside the label should not be part of the border.
+          excludes: <Offset>[
+            borderBox.globalToLocal(labelRect.centerLeft) + const Offset(1, 0),
+            borderBox.globalToLocal(labelRect.centerRight) + const Offset(-1, 0),
+          ],
+        )
+        ..restore(),
+      );
+
+      await tester.pumpWidget(buildFrame(TextDirection.rtl));
+      labelRect = getLabelRect(tester);
+      borderBox = InputDecorator.containerOf(tester.element(findBorderPainter()))!;
+      expect(findBorderPainter(), paints
+        ..save()
+        ..path(
+          // The points of the label edge should be part of the border.
+          includes: <Offset>[
+            borderBox.globalToLocal(labelRect.centerLeft),
+            borderBox.globalToLocal(labelRect.centerRight),
+          ],
+          // The points inside the label should not be part of the border.
+          excludes: <Offset>[
+            borderBox.globalToLocal(labelRect.centerLeft) + const Offset(1, 0),
+            borderBox.globalToLocal(labelRect.centerRight) + const Offset(-1, 0),
+          ],
+        )
+        ..restore(),
+      );
+    });
+
     testWidgets('OutlineBorder does not draw over label when input decorator is focused and has an icon', (WidgetTester tester) async {
       // Regression test for https://github.com/flutter/flutter/issues/18111.
       Widget buildFrame(TextDirection textDirection) {