Not every bathroom water problem is a leak

https://mywaterdamagemoldstlouisplace.greyhavendaily.com/posts/bathroom-humidity-and-hidden-risks-water-damage-and-mold-st.-louis-homeowners-often-miss

Sometimes that drip under the sink isn't a leak at all—it's condensation from humid air hitting cold pipes. I've seen homeowners panic over water stains on the ceiling only to find it's a clogged vent pipe causing overflow from the toilet. Not every bathroom water problem is a leak. Mineral buildup can make faucets spray everywhere, and a faulty shut-off valve might leave you with a running toilet that sounds like a leak but isn't. Check the simple stuff first.