vbox fix

html-client/src/components/vbox.component.jsx

@@ -32,13 +32,11 @@ function Vbox(args) {
             return sendVboxReclaim(i);
         }
 
-        if (combiner.indexOf(i) === -1) {
         const insert = combiner.findIndex(j => j === null);
+        if (insert === -1) return setCombiner([i, null, null]);
         combiner[insert] = i;
         return setCombiner(combiner);
     }
-        return setCombiner([i, null, null]);
-    }
 
     function combinerRmv(i) {
         combiner[i] = null;
@@ -66,7 +64,16 @@ function Vbox(args) {
         );
     });
 
-    const boundTds = range(0, 9).map(i => (
+    const boundTds = range(0, 9).map(i => {
+        if (combiner.indexOf(i) > -1) {
+            return (
+                <td
+                    key={i}>
+                    &nbsp;
+                </td>
+            );
+        }
+        return (
             <td
                 key={i}
                 draggable="true"
@@ -74,7 +81,8 @@ function Vbox(args) {
                 onClick={() => boundClick(i) }>
                 {convertVar(vbox.bound[i])}
             </td>
-    ));
+        );
+    });
 
     const boundRows = [
         <tr key={0} >