my netherite ingot glitched out

hi! i was playing mcpe, and i left to go check my other social medias. before i did so i had three blocks of diamonds stacked up and an item frame. i had a diamond in it beforehand but then i replaced it with a netherite ingot (that took me over a hour to get.) and put the diamond in a chest. whenever i got back on the netherite ingot was replaced with the diamond that was in there earlier, at least that's what i thought. i checked the chest i put the diamond in and there was the diamond. so instead of one diamond and a netherite ingot, i have two diamonds. im not asking for the ingot back, i just wanted to inform you guys that this happened and i honestly dont want it to happen to other players. so i really hope you guys can fix it. thank you for your time! (: <3