Merge pull request #665 in DESIGN/design from ~HADES/design:release/10.0 to release/10.0

* commit '6dce023d1b6bff1ed4109c352070631608d22d7e':
  REPORT-13280 【设计器启动】注册失败后，设计器卡死

designer-realize/src/main/java/com/fr/design/mainframe/CellElementPropertyPane.java

@@ -67,7 +67,7 @@ public class CellElementPropertyPane extends DockingView {
     }
 
 
-    public synchronized static CellElementPropertyPane getInstance() {
+    public static CellElementPropertyPane getInstance() {
         if (singleton == null) {
             synchronized (CellElementPropertyPane.class) {
                 if (singleton == null) {