Qt Creator FakeVim Ex command mapping problem

I  mapped the command "follow symbol under cursor" to ex command ":^gd$" using FakeVim Ex Command Mapping.

The problem is that when the cursor is focused on a function name of the function call, both Ctrl+Click and F2 work fine but ":gd" doesn't.

It seems like ":gd" can find the definition in other files but not in the current source file.