I just clicked on "Demo In Browser" button in bitnami OA download page, to launch a temporary demo site .
I tried to create a space using the sitemap, but the wizard didn't show correctly.
I tried to change the colors of the site using colorizer, but the settings are not saved, as when I go back to the home screen, the default colors are showing again..
I have tried to install bitnami package on my linux server, and the exact same behavior happened.
I have tested the native OpenAtrium 2.45 installer from Drupal.org and it was working perfectly
This is all what I have done.