diff -Naur a/src/widgets/styles/qstyle.cpp b/src/widgets/styles/qstyle.cpp
--- a/src/widgets/styles/qstyle.cpp	2021-08-11 11:36:05.811389639 +0800
+++ b/src/widgets/styles/qstyle.cpp	2021-08-11 18:34:10.095799644 +0800
@@ -627,7 +627,7 @@
     QRect aligned = alignedRect(QApplication::layoutDirection(), QFlag(alignment), pixmap.size() / scale, rect);
     QRect inter = aligned.intersected(rect);
 
-    painter->drawPixmap(inter.x(), inter.y(), pixmap, inter.x() - aligned.x(), inter.y() - aligned.y(), inter.width() * scale, inter.height() *scale);
+    painter->drawPixmap(inter.x(), inter.y(), pixmap, inter.x() - aligned.x(), inter.y() - aligned.y(), qRound(inter.width() * scale), qRound(inter.height() *scale));
 }
 
 /*!