From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; Konqueror/3.1; Linux)
Description of problem:
The Crux and Flat-Blue icon-themes do not display text file thumbnails. The other core themes do (i.e. Bluecurve and Gnome).
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.Use either the Crux or Flat-Blue icon theme.
2.Text (.txt) files do not display thumbnails.
Actual Results: No text thumbnails were present.
Expected Results: Text files would have thumbnails as in other icon themes.
I copied in the .icon files from the various gnome icon theme filesystem folders into the corresponding Flat-Blue icon theme filesystems folders and I was able to get text thumbnailling.
Filed in GNOME Bugzilla as: