8.2: Thumbnail images missing in the File Manager and Composer but present in Page Lists.
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All thumbnails are missing and clearing cache, rescanning, and refreshing the browser make no difference. Page lists with thumbnails work fine... just can't see any in the file manager or when selecting images in composer or attribute windows. I literally just started throwing this site together for a client yesterday.http://www.gandgboots.com/2017boots/
I did, at one point, have the "Clear cached thumbnails" box selected when I cleared the cache but has since unchecked and still nothing.
FYI... by toggling "CSS and JavaScript Cache" ON and OFF, I found that it is the culprit for Thumbnail issues in the File Manager. With it OFF, they show up fine.