JMeter中"What's this node?"功能及Ctrl+W快捷键失效问题咨询

I've run into this exact issue too, and after testing across several JMeter versions, here's what I can confirm:

• The feature is completely unresponsive:
  • Whether you try using the What's this node? option from the Help menu while a component is focused, or use the supposed keyboard shortcut Ctrl+W, there's zero reaction from the application. No help dialogs pop up, no feedback of any kind.
• No clear use case documentation exists:
  • I've dug through JMeter's official docs and community resources, but haven't found any documentation explaining what this feature is supposed to do or how to use it. This makes it seem like it's either an unfinished feature or a straight-up bug that's been carried over through versions.
• The working alternative:
  • For now, the only reliable way to get help for a specific component is to right-click directly on it and select the Help option from the context menu—this works consistently across all the versions I tested.
• A cross-version issue:
  • I've verified this problem in JMeter 4.0, 3.3, and 3.2; it's not isolated to a single release, which suggests it's a long-standing bug.

内容的提问来源于stack exchange，提问作者Ori Marko