VSCode调试Go，调用堆栈仅显示一个功能

I use vscode to debug Go program. But the call stack only show current break point function, no backtrace info. I use dlv command or goland, the backtrace info is right. Where is the config error?

• vscode only one function:
  

my workspace and configure

• vscode go:
  
• launch.json:
  
• user settings: