PhpStorm doesn't fully understand pnpm

I've requested help from JetBrains on this issue, but it has been nearly two weeks since I last heard from them and I'm hoping I might be able to get help here instead.

On a new HTML5 project, I installed the default set of packages (and a handful of others) using pnpm. PhpStorm, however, doesn't seem to recognize the node_modules structure that pnpm uses and thinks that none of the dependencies have been installed.

JetBrains claims that its IDEs support pnpm, but this is clear evidence to the contrary. If I'm wrong, then please tell me what I need to do to get PhpStorm to 'recognize' the pnpm node_modules directory structure and 'see' all of the installed dependencies.