回评任务的w和h突然变为0的兼容处理

src/features/mark/MarkHistory.vue

@@ -163,13 +163,13 @@ const currentTaskChange = async () => {
       });
     } catch (e) {
       // 恢复以前的行为，取回评失败则评卷任务为空
-      replaceCurrentTask(undefined);
+      await replaceCurrentTask(undefined);
     } finally {
       // store.globalMask = false;
     }
-    replaceCurrentTask(store.historyTasks[0]);
+    await replaceCurrentTask(store.historyTasks[0]);
   } else {
-    replaceCurrentTask(store.tasks[0]);
+    await replaceCurrentTask(store.tasks[0]);
     store.historyTasks.splice(0);
     secretNumberInput = "";
     currentPage = 1;
@@ -265,10 +265,12 @@ async function updateHistoryTask({
 }
 
 async function replaceCurrentTask(task: Task | undefined) {
-  if (store.isScanImage) {
+  console.log('replaceCurrentTask:',task);
+  store.currentTask = task;
+  
+  if (store.isScanImage && !!task) {
     await preDrawImage(task);
   }
-  store.currentTask = task;
 }
 
 function previousPage() {