Plugin blocks concurrent builds

[jorn86]

I have a Teamcity config that uses this plugin, and is configured to build a push to any branch in the connected VCS root. The builds are queued correctly, but the plugin is blocking the second build from being executed on a second agent.

Teamcity support has figured this out for me:

So apparently this behavior is caused by Node.js plugin. Seems this plugin filters agents for a queued build. Filtering code can be seen here: https://github.com/jonnyzzz/TeamCity.Node/blob/master/server/src/com/jonnyzzz/teamcity/plugins/node/server/NVM.kt

Why are the agents filtered, and can I prevent the plugin from doing so?