Problem Statement
Rubi code in "Section 9.2 Function 1" had to be modified in 319d990 for bringup. Otherwise, the function results in infinite recursion.
Temporary Fix
An additional condition was added in 319d990 to avoid the infinite recursion.
Expected Fix
Identify root cause, and fix upstream (in Rubi), if necessary.
Additional Context
This rule also leads to infinite recursion in ExpReduce.