Keys glitch – Tomb Raider I Review

Guys... there is a bug or a glitch, I don't know, within the game on iOS, and it has happened to me twice. First on the lost valley part, where you have to pick up the three pieces for the thing to close up the rush of water. I picked up the three pieces, went to put them there, and at the last one, something happened, and it didn't take the key. Went to inventory, and it wasn't there. I went to the places I'd picked them up from, and they weren't there. The same thing happened at the cistern part, with one of the silver keys. Please fix this. I have started the game twice because of this issue.
Review by la_maronga on Tomb Raider I.