Steps to reproduce:
1. Create a bunch of sub-items on Home content on platformUI;
2. Remove all contents previously created on Home at the bottom;
3. Go back to Home and check the sub-items pane underneath;
You'll see:
"Loading the sub-items list..."
loading indefinitely
However if you navigate somewhere and go back here in the meanwhile it will already show ok, so this has to be checked right after deletion of all sub-items.