I ran the numbers on lacerte.  Couldn't duplicate your problem.  Line 23 worked as expected.

Only suggestion:

Make sure software is updated. 

Call support, serve screen, or Send the client file to Lacerte.  Lacerte has been responding to my emails within a day.  I had a complex trust return problem on Monday.  Called Lacerte.  Wait time was less than 10 minutes.  Spent an hour (mostly on hold) and concluded it was a Lacerte shortcoming.

Good luck.  Please update the finding.  I have a few large Complex Trusts in the pipeline.