I fixed this similar to how I fixed the KJFK issue:
[fltsim.39]
title=FSDT_SafeDock3_ground_grey_off
model=model=FSDT_SafeDock3_ground_off
texture=FSDT_SafeDock_AVGDS
And then I tested the following FSDT airports: KJFK, KORD, KLAX, KLAS, KSDF, and PHNL, and no more SimObject issues.
Don't know if this can affect any non-FSDT airports, but I tried a handful and no issue found (with the current fixes in place).