So here’s a few ideas that come to mind;
*I cannot remember, but is there a “NUDge” module in the TOC box or Controller?
*FE ignores DET and uses NUDge so maybe something there in the FE/FI circuit/Module.
*DOB works as it should?
*CS5 BIT 0 (ignore reopen related)
*CS6 BIT 4 (EE vs SE).