Folder .jpg preserve not working as intended with extensions, copies all source files

Hi,

The Folder.jpg Preserve DSP works fine as long as I use it with the default settings, i.e. the checkbox only. But whenever I try to add extensions manually (jpg, png, bmp, pdf), this results in ALL source files being copied, including those with a .flac extension, which I have not added, and this becomes quite taxing for my disks. Is there a way around this issue?

You are adding them as:

.jpg;.png;.bmp;.pdf

?

Exactly like that, yes.

Using the Windows or Mac version?