[nicrump]

Weisan, is this in Austin? it takes a pretty big shift in P&B foundations to cause a plumbing failure. Enough that one would likely notice other issues first, drywall crack, door/window closure issues, sloping floor.

If none of these exists, fix the leak and take a wait and see on the rest.

Most P&B foundation in central Texas(in the black dirt anyways, that are not DEEP bottom) are rarely perfect or stable. I honestly wouldn't sweat it too much if you are not seeing the kinds of structural issues I've referenced.

btw, was it supply or drain failure? Is supply, copper or pex? If the plumber didn't bother to crawl under there and look then you should get someone to check it out closer. I can share a name or 2 of trusted independent people. PM me.

Cheers!