Plumber leak detector guy found it the water migrated to the spot somehow from the opposite side of the closet without making the closest wall wet at all or the carpet along the way.
The floor was covered with water that was not wet.
Before you seal your floor check to see how damp it is.
Water damaged vinyl flooring problems are more common over concrete than with vinyl floors installed over wood substrates.
I ve decided to end it once and for all with proof.
This meme is over.
If you too are sick and tired.
After 24 hours check the plastic to see if water has condensed.
Flood damage is not covered.
Over wood the problem is usually a water leak flooding or the underlayment was too wet when installed.
Water damage problems may not be as common with sheet vinyl flooring as some other flooring products but they do happen.