Note piece of timber placed between floor and tile, this stops timber expanding, will crack tile and bow timber the expansion joint is to be installed without any blockage.
Builder has installed yellow tongue upside down you can see because writing is showing. Yellow tongue has a raw side and a greasy side. Floor is glued to the raw side. Greasy side faces substrate as the wax helps prevent moisture entering the yellow tongue. Yellow tongue expands with moisture.
Floor board is touching wall, there should be a 10mm gap between wall and flooring. Floor board should have been docked. Inadequate gaps been left for flooring movement