I agree with Jarno; these three bugs are related, but this one (at least) is not an exact duplicate of the other two. This one is explicitly and exclusively about mkinitramfs, whereas the other two are more general and can be triggered in other ways. (Those two might be duplicates of each other, but not of this one.) That said, a solution to the other two bugs is likely to make this one less likely to be a problem.
I agree with Jarno; these three bugs are related, but this one (at least) is not an exact duplicate of the other two. This one is explicitly and exclusively about mkinitramfs, whereas the other two are more general and can be triggered in other ways. (Those two might be duplicates of each other, but not of this one.) That said, a solution to the other two bugs is likely to make this one less likely to be a problem.