Thanks for pointing this out. This is for sure out of the usual; we'd like to get to the bottom of it.
Steps:
(1) Go to About, click Troubleshooting, and enable "Enable advanced logging"
(2) Reboot, so that the setting will take effect
(3) Get desktop the way you want it, fixing the order. Take a snapshot, open it up and rename it to "Before"
(4) Reproduce the issue / break it
(5) Take another backup snapshot, rename it "Broken"
(6) Head back to About, Troubleshooting, and "Create error report package".
Helpful as well to know if restoring that "Before" snapshot after submitting the error report package puts the icons as you'd want them, or if even that snapshot restoration is broken.
Thank you, and hoping to get to the bottom of it ASAP

