Hi,
This problem has already been reported in RPI 1101111. The behavior changed beginning with 2.2.1 as in previous versions 88 levels in an interface definition were allowed and the compiler just ignored them.
This has now been marked as development fixed and the old behavior has been restored. Unfortunately the fix was too late to make it into the upcoming 2.3 release so it will be delivered in V2.3 Update 1. Please open up a support incident with Customer Care if you would like to be added to the RPI so we can notify you when this will be available. You can reference my name and this post and it will be routed accordingly.
Thanks.