On PC Java 1.19 :
Buried Treasure maps in sunken ships do not display the regular treasure finding map when held. It instead acts like a normal map and when I right clicked it, it mapped the current area and then displayed that instead of the treasure location. Found on two different ships/maps. Also when trying to open the map chest I noticed it was unresponsive for the first three or so clicks and when it finally opened it replayed the sound of a chest opening multiple times in a row. No clue if that's related to this issue. Ive included the screenshot of the F3 screen while holding it incase it shows something