I believe, and I could be wrong about this, that JetBrains only picks up changes to your .shell_rc files on a restart.

What I learned instead was to stop using the built in terminal in WebStorm. If WebStorm crashes you’re fucked. Objectively, it never did that a lot and does less so recently, but not never.

WebStorm likes to pick up file system changes when you give it focus, so any manipulation you do in the builtin terminal doesn’t necessarily do that.