Sometime between last night and today, foton seems to have become unable to generate certain elliptic filters of high order.

For example: choose elliptic band pass, first frequency 5 Hz, second frequency 500 Hz, fifth order, 1 dB ripple. Foton freezes as soon as you click ok. Same for a sixth-order elliptic bandpass, and a fifth-order elliptic low-pass.

Last night, we were able to generate fifth-order elliptic filters no problem. What happened between then and now?