The TID-AIR folks have prepared a briefing describing the persistence artifacts observed recently in ePix10k, where they come from, and propose dfixes. Upshot is: A firmware fix to induce a self-triggered reset frame has been implemented, which resolves the issue in a way that's transparent to users. A hardware fix has also been implemented in the design for all future ASIC fabrications. Read about it here:
https://drive.google.com/file/d/1OHfW9YDoEERSSeKgS_8petTpXx-Zlh31/view?usp=sharing