Test fix.

intern/ghost/intern/GHOST_SystemWin32.cpp

@@ -1607,6 +1607,7 @@ LRESULT WINAPI GHOST_SystemWin32::s_wndProc(HWND hwnd, UINT msg, WPARAM wParam,
             if (inRange) {
               /* Some devices don't emit WT_CSRCHANGE events, so update cursor info here. */
               wt->updateCursorInfo();
+              wt->enterRange();
             }
             else {
               wt->leaveRange();

intern/ghost/intern/GHOST_Wintab.cpp

@@ -247,6 +247,12 @@ void GHOST_Wintab::leaveRange()
   m_fpPacketsGet(m_context.get(), m_pkts.size(), m_pkts.data());
 }
 
+void GHOST_Wintab::enterRange()
+{
+  /* Placeholder to signal tablet in range, necessary to disable mouse input handling. */
+  m_lastTabletData.Active = GHOST_kTabletModeStylus;
+}
+
 void GHOST_Wintab::remapCoordinates()
 {
   LOGCONTEXT lc = {0};

intern/ghost/intern/GHOST_Wintab.h

@@ -91,6 +91,11 @@ class GHOST_Wintab {
    */
   void loseFocus();
 
+  /**
+   * Updates tablet state to indicate tablet is in range.
+   */
+  void enterRange();
+
   /**
    * Clean up when Wintab leaves tracking range.
    */