Oddly it seems to be working sometimes today. I have it bound to Ctrl+Enter.
Here's some code, in a plain file on its own:
void foo()
{
bar = 1;
reticulateSplines();
}
It looks like the keystroke fails if the cursor is before the last two characters in the symbol name; it fails on the 'a' and 'r' in "bar", and on the final 'e' and 's' in "reticulateSplines". I wouldn't expect it to work if placed at the end of a symbol.
If I notice a case where I can't get it to appear at all I'll post again.