Given a log smooth pair $(X,B)$ with a reduced boundary divisor $B$, consider a birational model $\pi:X' \to X$ and a boundary divisor $B'$ which is given by $K_{X'}+B'=\pi^*(K_X+B)$. Here is my question:

(1) can we construct an example that $(X',B')$ is not sub-dlt?

(2) is there an lc center of $(X',B')$ which is not an irreducible component of an intersection locus of some certain components of $B'^{=1}$ (this means the coefficient one part of $B'$)?