do not check out current branch

platform/vcs-api/src/com/intellij/openapi/vcs/VcsTaskHandler.java

@@ -76,6 +76,23 @@ public abstract class VcsTaskHandler {
     public int compareTo(TaskInfo o) {
       return Comparing.compare(myBranch, o.myBranch);
     }
+
+    @Override
+    public boolean equals(Object o) {
+      if (this == o) return true;
+      if (o == null || getClass() != o.getClass()) return false;
+
+      TaskInfo info = (TaskInfo)o;
+
+      if (myRemote != info.myRemote) return false;
+      if (!myBranch.equals(info.myBranch)) return false;
+      return myRepositories.size() == info.myRepositories.size() && myRepositories.containsAll(info.myRepositories);
+    }
+
+    @Override
+    public int hashCode() {
+      return myBranch.hashCode();
+    }
   }
 
   private static final ExtensionPointName<VcsTaskHandler> EXTENSION_POINT_NAME = ExtensionPointName.create("com.intellij.vcs.taskHandler");

plugins/tasks/tasks-core/src/com/intellij/tasks/actions/vcs/VcsOpenTaskPanel.java

@@ -20,7 +20,6 @@ import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.ComboBox;
 import com.intellij.openapi.ui.Messages;
 import com.intellij.openapi.ui.ValidationInfo;
-import com.intellij.openapi.util.Condition;
 import com.intellij.openapi.vcs.VcsTaskHandler;
 import com.intellij.tasks.LocalTask;
 import com.intellij.tasks.Task;
@@ -169,7 +168,8 @@ public class VcsOpenTaskPanel extends TaskDialogPanel {
     if (myCreateBranch.isSelected()) {
       VcsTaskHandler.TaskInfo branchFrom = (VcsTaskHandler.TaskInfo)myBranchFrom.getSelectedItem();
       Runnable createBranch = () -> myTaskManager.createBranch(localTask, myPreviousTask, myBranchName.getText(), branchFrom);
-      if (branchFrom != null) {
+      VcsTaskHandler.TaskInfo[] current = myVcsTaskHandler.getCurrentTasks();
+      if (branchFrom != null && (current.length == 0 || !current[0].equals(branchFrom)))  {
         myVcsTaskHandler.switchToTask(branchFrom, createBranch);
       }
       else {