Embedded icons not shown on flash drives

Here's a weird one I just noticed in Opus 10.5.7: It doesn't show embedded icons in executable files when the file is on a flash drive. If I copy the file to my internal HD/SSD, or to an external hard drive, the embedded icon is shown (any view, thumbnails, list, tiles, etc., doesn't matter). However, if the file is on the flash drive, Opus only show the generic icon. Windows Explorer shows the embedded icons in all cases. Is there some setting I am missing somewhere?

The option that controls this is Preferences / Folders / Folder Display / Show generic icons for.

That was it, thanks!