Acrobat Pro DC - Layered PDF - Renaming Top-Level Layers causes crash 100% of the time

Running into an issue where attempts to change the names of any top-level layers of a layered PDF is resulting, without fail, in a program crash.  This seems to be since the latest update (as this function was successfully utilized last week to finalize some documents). 

While renaming these has always had a high crash-rate, it seems to be a guarantee now, and have replicated  this result across several Mac OS and Microsoft OS systems within my team here.  The documents still layer in/function correctly otherwise, we simply cannot clean up the layer names (Basically removing the .pdf extension for a cleaner/clearer layer structure for end-users). 

Anyone else encoutering this issue?