P: DNG Converter: Option to turn off conversion of JPEGs

Same problem. Using Adobe DNG converter now became very stressfull, if someone shoots in RAW+JPG it has to do like 3 passages more, this does not make sense. It could be very simple to solve this with a button to flag, it already exist in Adobe Lightroom Classic, when you’re going to convert your catalogue in DNG with Lightroom you can choose “Convert only RAW files”. 
I really don’t understand why they did this update without thinking about a button to flag.

Same problem here. The problem started with some 18.5.x version and is also still a problem with the newer18.6. version.
Switching back to an old version is bad because I bought some newer lenses.

The simplest solution is to keep Raw and JPEG files in separate folders. I go as far as keeping them on separate drives. It is not possible to "convert" JPEG files into DNG files since they are obviously not Raw files. You can wrap them in a DNG container file but they remain JPEG files. Most will argue that this serves no purpose.