isApplicationMBS does not work under 2019R2

For a small utility I am working on, I need to test if a folder is an application, and thought I would use folderitem.isAnApplicationMBS.

Problem is, it is always false.

Am I missing something ?

https://www.monkeybreadsoftware.net/launchservices-folderitem-method.shtml

19.4 plugin Version?

Seems to work fine here with 19.5pr4.

With macOS 10.14.6 and MSB 19.4 it works.

Never mind.

Here is a project that show “True”.

Download Project

Download application