diff --git a/src/gui/painting/qbezier.cpp b/src/gui/painting/qbezier.cpp
index 65e6063fe4..fcf19a1a63 100644
--- a/src/gui/painting/qbezier.cpp
+++ b/src/gui/painting/qbezier.cpp
@@ -400,6 +400,33 @@ static bool addCircle(const QBezier *b, qreal offset, QBezier *o)
     return true;
 }
 
+// Patch: Workaround VS2019 compiler bug, see QTBUG-75280.
+#ifdef Q_OS_WIN
+Q_NEVER_INLINE void QBezier::split(QBezier *firstHalf, QBezier *secondHalf) const
+{
+    Q_ASSERT(firstHalf);
+    Q_ASSERT(secondHalf);
+
+    qreal c = (x2 + x3)*.5;
+    firstHalf->x2 = (x1 + x2)*.5;
+    secondHalf->x3 = (x3 + x4)*.5;
+    firstHalf->x1 = x1;
+    secondHalf->x4 = x4;
+    firstHalf->x3 = (firstHalf->x2 + c)*.5;
+    secondHalf->x2 = (secondHalf->x3 + c)*.5;
+    firstHalf->x4 = secondHalf->x1 = (firstHalf->x3 + secondHalf->x2)*.5;
+
+    c = (y2 + y3)/2;
+    firstHalf->y2 = (y1 + y2)*.5;
+    secondHalf->y3 = (y3 + y4)*.5;
+    firstHalf->y1 = y1;
+    secondHalf->y4 = y4;
+    firstHalf->y3 = (firstHalf->y2 + c)*.5;
+    secondHalf->y2 = (secondHalf->y3 + c)*.5;
+    firstHalf->y4 = secondHalf->y1 = (firstHalf->y3 + secondHalf->y2)*.5;
+}
+#endif // Q_OS_WIN
+
 int QBezier::shifted(QBezier *curveSegments, int maxSegments, qreal offset, float threshold) const
 {
     Q_ASSERT(curveSegments);
diff --git a/src/gui/painting/qbezier_p.h b/src/gui/painting/qbezier_p.h
index f8a91e9ef3..50c60b2d71 100644
--- a/src/gui/painting/qbezier_p.h
+++ b/src/gui/painting/qbezier_p.h
@@ -222,6 +222,8 @@ inline QPointF QBezier::secondDerivedAt(qreal t) const
                        a * y1 + b * y2 + c * y3 + d * y4);
 }
 
+// Patch: Workaround VS2019 compiler bug, see QTBUG-75280.
+#ifndef Q_OS_WIN
 inline void QBezier::split(QBezier *firstHalf, QBezier *secondHalf) const
 {
     Q_ASSERT(firstHalf);
@@ -245,6 +247,7 @@ inline void QBezier::split(QBezier *firstHalf, QBezier *secondHalf) const
     secondHalf->y2 = (secondHalf->y3 + c)*.5;
     firstHalf->y4 = secondHalf->y1 = (firstHalf->y3 + secondHalf->y2)*.5;
 }
+#endif // Q_OS_WIN
 
 inline void QBezier::parameterSplitLeft(qreal t, QBezier *left)
 {