Why doesn't PhpStorm see the dollar sign through file search?

Question

phpstorm

Hello. Just yesterday there was such a problem. If I start looking for variables in the file and write "$" in the search bar, then the IDE does not find dollar symbols, but highlights the ends of the lines:
I did not change any settings. Tell me, please, what could be the matter?

Answer 1

And what did the screen cut off? Wangyu, there is a check mark at the end of the search bar Regex.