Oncidium bulb starting to wrinkle after producing a new shoot. Is this normal?

[claypot]

As my forum name suggests I am a great fan of clay pots so I believe you should not have any problem with yours so long as the surface remains open and porous. The only thing you need to be careful about indoors is the surface where the pot stands so dampness does not bring damage. I use clay pots extensively in my greenhouse but have found that they work best only when the plant needs more than 4 inch size. Not sure why, but smaller plants don't thrive. Drainage must, of course, be paramount.