Coregistration of a stack of subset for TSX products

Hello everyone, i was trying to coregister a stack of TSX subset with respect to a single master (final goal is to export in stamps format after generating the interferogram and removing topographic phase). The problem is that whenever I try to do this, the first coregistered product in the stack after the master always looks strange with respect to the others (whatever is the first product I load after the master in the stack it is always showing the same problem)

Can anyone explain me why this is happening? Is it related to the fact that i’m coregistering subsets instead of the complete product?

I also encounter with this issue, I seems a bug of version 8.0.6.
I suggest you upgrade to snap ver 9.0 and try again if there are fixed.