In the PWPageIslands table there are new columns to store the dimensions [Top] [Left] Width Height. If the user accessing the page for the first time has islands not displaying properly, usually because of an image missing, the dimensions will be incorrect. All that needs to happen is to switch the theme or user to Default theme, then set these columns back to NULL in SQL, and hit the pages again.
Once these are set the first time they will remain the same for all themes as soon as all the pages are hit. Then you can check the other themes to make sure images are in the correct spots and sizes are correct. Tech support can assist in making these changes.
This should not happen on release but if anyone does see this issue this should correct it.