WEBENCH® Tools: FilterPro misleading nomenclature

Tool/software: WEBENCH® Design Tools

Hi,

I use FilterPro Desktop V3.1.0.23446. When designing a Bessel filter (MFB) with a Passband Frequency of 20kHz, I can see under the schematic the following text:

Filter Stange: 1
Passband Gain (Ao): 1
Cutoff Frequency (fn): 25.48kHz

I was confused about the "Cutoff Frequency (fn): 25.48kHz" as I have designed fc=20kHz.
So maybe the text should be "Natural frequency (fn): 25.48kHz"?

Best regards,

Patrick