Hello Remy
I used dynamic icon on my desktop but I left icon view under folders with normal.
After (first) upgrade, I have dynamic icons under any folder
(next re-install didn't change settings)
What I understand is that you disable all dynamic icons and just let the dynamic icons on the desktop.
I tried these on my system:
1) On Setup "Workplace Shell" on the "Icons Size" tab I set all the normal.
2) Right click on the desktop and set the desktop icons as "Dynamic Icon".
After that I still was not able to reproduce your bug. I see the icons on "Command Prompts" and "System Setup" even with the WPFolderEx class definition.
Regards