Today in my pool, I noticed a black rubbery thin strip that I presume was acting to prevent water from entering between the stairs and the liner peel right off on both sides of the stairs. It was a very thin black strip. Should I be concerned? I have noticed that my water level seems to have dropped slightly since yesterday despite colder weather, no heater being on, and the pump running minimally. I will perform the bucket test later this week but curious if I should be concerned about the fact that both of these black strips peeled right off.