Same defect in Finder, slightly different symptom.
General Finder Defect : Folder alias icons get generic document icons
Symptom 1: New folder alias has generic document icon
- Open two folders in the Finder in icon view (command 1)
- Create another folder inside the "source" folder
- Hold command key and drag new folder from "source" folder into "destinatinon" folder
- New folder alias has generic document icon
Cleanup Symptom 1 : Finder refreshes folder alias icon to actual icon temporarily
- hold command key down
- click name of folder in destination folder
- traverse up one directory/folder level to open destination's parent folder
- (source, destination and destination folder's parent should be showing in Finder in icon view)
- close destination folder
- from destination parent folder, open destination folder
- Finder refreshes folder alias icon to actual icon temporarily
Symptom 2: Folder alias icon is blank document after restart of Finder
- Leave target, destination and destination parent folders open from Symtpom 1 reproduction
- Go to Apple Menu, select "Force Quit"
- Scroll to bottom, select Finder, press "Relaunch" button
- (Finder relaunches)
- Folder alias icon is blank document after restart of Finder
Cleanup Symptom 2
See Cleanup Symptom 1, start at step 5
Symptom 3: Folder alias icon is blank document after Mac reboot
- Leave target, destination and destination parent folders open from Symtpom 1 or 2 reproduction
- Reboot Mac
- Folder alias icon is blank document after Mac reboot
Cleanup Symptom 3
See Cleanup Symptom 1, start at step 5