It appears updating to the latest EAP 2019.3 193.3519.25 broke the PHP plugin. Jetbrains says the plugin is not compatible with this build, and it won't load. There doesn't seem to be a version compatible with this update [listed here on the plugin page](https://plugins.jetbrains.com/plugin/6610-php/versions).
I tried downloading and installing the latest Sept 18 version of the plugin manually from disk, but the latest version is also not compatible. In fact, that one seems to be compatible with an even older version than the previous release?