image optimizer for web

Upon starting Pinga v0.58, the JPEG compression level resets to: 
"progressive - fast encode, slow decode" 
if it was previously set to: 
"best savings - slow encode and decode".
Setting it to either of the "baseline" options doesn't lead to a reset. No other options reset.

Windows version: Windows 10 Home Build 19045

Copypaste from Pinga.ini:
[Options]
PNGCompressionLevel=3
JPEGCompressionLevel=3
EnableLossyCompression=1
LossySetQuality=6
ImageTosRGB=1
JPEGautorotation=true
ImageResize=false
ResizeDefinition=17
KeepMeta=false
KeepColorsAlpha=false
Multithreading=4
Autorun=0