I've had a cute little Schoenorchis fragrans for about a year now and it seemed very happy. This morning I went to check on it when watering, touched it to remove a speck of dirt on a leaf... and all the leaves fell off!
A bit more information:
The leaves were perfectly green, no sign of rot at the base.
Plant is mounted, and mount hangs in a small mason jar with some leca and water at the bottom for humidity. I used to close the jar part of the day in the first months I had it, but now it stays open.
I mist the roots daily, being careful to not get the plant wet.
The only leaf still attached is the newly growing one. Since the roots are nice, I'm hoping it will bounce back...