Ok. I've installed the new update and run it through its paces. Yes, the Preferences Window is fullscreen and it cannot be made less than that by the dedicated screen-resize button (I guess it's hard-wired now). I do not see this as an issue.
The Search function works well but it cannot go into fullscreen mode. There is an additional problem. If the previous window (typically, Manage Glossaries) was in fullscreen mode, then I select Search, and minimize the Search window by tapping a minimize widget, I am stuck at the fullscreen window and there is no way to get out of it without rebooting the device. I presume that this is because the controls are still associated with the search window that has been minimized.
The same problem happens with the main Quiz window in fullscreen, and the edit window that is minimized. The reboot is required to get out of this too.
Maemo includes an update widget that from time to time checks for updates (similar to Windows and Linux). However, I do not know how often it checks for updates. This time it did not show an available update but I was able to update by following the link you've given above.
