Method 1: Is there a shortcut key conflict with input method software such as Sogou? Of course, it may also be a shortcut key conflict caused by some newly downloaded software that causes IDEA global search to fail. For example, the picture below:
You can change the input method shortcut keys or directly turn off the input method shortcut keys, so that the idea's global search function is restored.
Method 2: The ultimate solution. If you can't find which software conflicts, then directly modify IDEA's global search shortcut key. That is, you can no longer use Ctrl+Shift+F. Directly open the keymap in the configuration. Search for "Ctrl+Shift+F", then replace and edit it with a new one.
