--- old/src/java.desktop/windows/native/libawt/windows/awt_Component.cpp	2018-04-20 18:34:03.529460500 +0300
+++ new/src/java.desktop/windows/native/libawt/windows/awt_Component.cpp	2018-04-20 18:34:03.101158600 +0300
@@ -3879,19 +3879,21 @@
 {
     UINT bits = 1;
     POINT p = {0, 0}; // upper left corner of the client area
-    HWND hWnd = GetHWnd();
+    HWND hWnd = ImmGetHWnd();
     if (!::IsWindowVisible(hWnd)) {
         return;
     }
     HWND hTop = GetTopLevelParentForWindow(hWnd);
     ::ClientToScreen(hTop, &p);
+    int sx = ScaleUpX(x) - p.x;
+    int sy = ScaleUpX(y) - p.y;
     if (!m_bitsCandType) {
-        SetCandidateWindow(m_bitsCandType, x - p.x, y - p.y);
+        SetCandidateWindow(m_bitsCandType, sx, sy);
         return;
     }
     for (int iCandType=0; iCandType<32; iCandType++, bits<<=1) {
         if ( m_bitsCandType & bits )
-            SetCandidateWindow(iCandType, x - p.x, y - p.y);
+            SetCandidateWindow(iCandType, sx, sy);
     }
 }