No, the problem is the deletion.
When i delete the film previously added, the thumbnail persist on the directory. No refresh of the directory thumbnail. But if y add a new film, no problem, the thumnail is added on the directory thumbnail.
Look this snapshot:
On the left, you can see 4 thumbnail of my films previously added AND deleted.
On the right you can see the content of the folder, no film (because i've deleted all film)
If Emby refresh well, there would be no more image in the thumbnail of the directory. Is not a cache problem of my browser.
To update the directory thumbnail (and delete bad thumbnails), only one solution : refresh manually the metadata:
I confirm, i have checked the real time monitoring for this folder.
Edited by blastbass, 13 January 2017 - 04:20 AM.