Thumbnail refreshing query

[blackxacto]

macOS 10.13.6, XnViewer .9, I have noticed that opening an image from XnViewer into Affinity Photo 1.6.7, editing the color, then saving & closing the image, that if I go back to XnViewer, THUMBNAILS REFRESH, REFRESH, do not reveal the newly adjusted color. If I QUIT XnViewer, then reopen, the thumbnail shows the newly edited color.

Is there another way to get XnViewer to show the newly edited color without quiting XnViewer?

[xnview]

even with a 'thumbnail refresh'??

[blackxacto]

Pierre, I don't know what happened yesterday. It is working today. Sorry for the query. I love this app. I hope I didn't get your blood boiling. I swear it was not changing yesterday unless I quit and restarted. But it worked immediately today. Again sorry.