Giant leaf on Sedirea japonica

[LexaCat]

Thank you all for your thoughts. I'm new to growing this species, so I am happy to hear that the new leaf looks relatively normal.

In response to Ray - I can certainly move it to a brighter position on the shelf to see if that makes the plant a little happier.

In response to aihpcfl - I bought the plant from Orchids by Hausermann, so I assume it was getting good care before I bought it. However, I did move it out of bark and into high quality sphagnum, which is my preferred growing medium, so the roots may be getting more consistent hydration.