快捷方式在Eclipse Neon中无效

我在Windows 10上运行Eclipse Version:Neon.2 Release(4.6.2).

某些快捷键如ctrl+ backspace(应删除前一个单词)不起作用.

在preferances > General > keys设置下设置如下:

+----------+--------------------------+
| Command  | Delete the previous word |
+----------+--------------------------+
| Binding  | Ctrl+Backspace           |
+----------+--------------------------+
| When     | Editing Text             |
+----------+--------------------------+
| Category | Text Editing             |
+----------+--------------------------+
| User     | U                        |
+----------+--------------------------+

WHY.. 29

关闭并打开项目修复它.

关闭并打开项目修复它.