Note list preview plugin

Thank you for this great plugin.

Is there any reason why I can't get a thumbnail from a jpg image exceeding c.1800 pixels ? the iOS app can resize to 1920 but the image doesn't appear as a thumbnail. Yet a png file, seemingly of any size, does show a thumbnail.

I have a note with a jpg image resized to 1920 in iOS, occupying 958Kb but no thumbnail appears.
If I right-click and copy in the desktop app, then paste the image into a new note, I get a 1920 png occupying 3.4Mb and the thumbnail appears.

I'd like to be able to add a new photo note in the iOS app, resize the image to 1920 which is fine for my purposes, and show the thumbnail in the desktop app. I don't know if there is an arbitrary limit somewhere of 1800 px but could it be increased to 1920 ?