[Urgent] Unexpected error in LTM4613 parallel operation


I'm DFAE in Japan. Our customer is reviewing unexpected error in LTM4613 parallel operation like Figure 21 on D/S. Because LTM4613 is burned under their evaluation. Could you please let me know what happen if the pin is opened ? 

Assume that only one of the two LTM4613s has the phenomenon as follows. If this happens, are there any possibility that LTM4613 will burn?

1. One of FB open.

2. One of RUN open.

3. One of COMP open.

4. One of TRACK/SS open.

5. One of MARG0 open.

6. One of MARG1 open.

7. One of PLLIN open.