Seismosoft | Earthquake Engineering Solutions

Hello.
I loaded an acceleration record, and just checked "Show Uncorrected Results (grey line)."
I believe both blue and grey lines should overlap but those do not as shown below.
Would you please let me know what I am missing? or is this a bug?

Indeed, this is a bug. The uncorrected results for the FFT and the Power Spectra are wrong.
The bug will be fixed in the upcoming v2022 release.
Note that the results for the corrected record are correct and you can use them.
Thanks for spotting this lgchemer.
Seismosoft Support