Roy, I can’t reproduce that. For me it works correctly. The NAME field should automatically be updated as you type in either the given or surname fields. On my site that happens, and the subsequent change is saved and displayed normally.
Can you use ‘developer tools’ in your browser and look to see if there are any errors displayed there while testing that edit? (Developer tools F12 on most browsers. Errors will be highlighted in red).
The name field problem must be associated with one of the bug patches that have been published in the forum. It didn’t exist prior to applying those patches. Just reloaded 3.2.0 over-riding the patches and it solved the name field issue. The simple_pages patch is not the cuprite, I already checked that.
Day after tomorrow, I will have some time to check all the other patches.