Split ends of leaves on Phalaenopsis

[HiOrcDen]

Two of my Phalaenopsis have splits at the edge of one leaf. They are both top leaves. The edges of the split are a light offwhite color, and the leaves have a few small spots the same color. What could have caused this, and is it dangerous to the plant? I was thinking perhaps it's excessive handling. There are no signs of burning.

I tried searching this topic and only found discussion of splits in the middle of the leaf which are not discolored. Would someone care to provide an answer about what I described? Thanks in advance.