Update to AASHTO Ninth Edition is causing an error I do not understand in previously valid models

Hello,

We recently deployed the current build of LEAP Steel for the AASHTO LRFD Ninth edition update.  The design summary check is producing performance ratios that are above 1.0 in places that were never flagged in the previous builds of the software.  This particular error does not seem to make much sense to me because it is instantaneous and leaves as it arrives, typically flexural failures show progressive failures for several POIs leading up to the worst case.

It also is not clear to me since this is a continuously braced flange due to composite action that issues would be present here.  Can you provide some insight to how this check is being performed and what "FSLAB" is regarding this failure?