Created attachment 56356 [details]
Screenshot showing the non-broken label before loading the preview

Version:           unspecified (using KDE 4.5.95) 
OS:                Linux

When browsing to a directory, where a subdirectory contains images, the textlabel of this image-containing subdirectory is messed up in some cases after loading the image preview.

Reproducible: Always

Steps to Reproduce:
1. Open kfiledialog
2. Enable image preview
3. Change view mode to 'Short view'
4. Browse to a directory, where a subdirectory contains images
5. Watch the labels of directories as the previews are loaded

Actual Results:  
1st attachment:
First, when there's no preview shown yet, the label looks fine

2nd attachment:
Then, after the preview is loaded, the text label of the directory is wrapped into 3 lines and on the right side of it, some leftover text from the previous label is shown

3rd attachment:
When moving the cursor/changing the window focus, the preview is refreshed and the leftover text is gone, but the label still remains wrapped into 3 lines.

Expected Results:  
I'd expect the label to not change at all, also when a preview is loaded.
Furthermore there should be no rendering glitch when loading the preview.

Please take a look at the 'Bilder' directory in the attached screenshots.
It seems this does only happen in 'Short view' and independent from the used zoomlevel.

I'm using Qt 4.7.1.