This morning I have corrected the logic error at 10:16 UTC.
Figure 1. Shows the safety working properly, the FF corrections visible in INJ_PSTAB_NOISE and the FF tracking loop start at 10:17:30 UTC, 20 seconds after the RFC locks, despite the ENABLE flag being activated since at least 10:17 UTC.
Enabled also the 250Hz FF, and leaving it on for the day to see if any issues arises over several hours. I will disable the PSTAB FF loop at the end of the day as a precaution for the weekend.