ICUFoldingFilter loading in IDE, but not jar ?!

[Allison, Timothy B.]

In Intellij, when I run unit tests in my app that uses Lucene (6.6.0) and the 
ICUFoldingFilterFactory, I see 96 filter factories available via 
TokenFilterFactory.availableTokenFilters().  When I run the same code from a 
jar built with the maven shade plugin, and I confirm that the jar actually 
includes the icu classes, I only get 93 filter factories.

The missing factories are:

icufolding
icunormalizer2
icutransform

Any idea what's going on?

Thank you.

        Best,

                    Tim