XnView Software

Every time I drag and drop two or more JPG images from File Explorer to my MP folder, one image always fails to display in the browser thumbnails (as shown in the image). I have to press F5 to update to fix it. Is there a problem?

P.S. Windows XnView MP, any version

Additionally, when searching for a folder using the quick filter, version 1.9.8 sometimes fails to display some thumbnails (as shown in the image above). Pressing F5 to update resolves the issue and displays all thumbnails correctly. (This problem did not exist in previous versions.)