I seem to have found a bug that prevents you from changing the name of a "map event." I don't have any trouble changing a common event's name, or even a map itself.
If you just change the name of the event, regardless of if you just created it or if it's an old event, it doesn't save the changes. However, if you change the name of an event and then press any of the buttons up top in the "Edit Event - ID:xxx" screen, such as "new event page," "copy event page," and so on, then the name will save. In addition, changing the name, then selecting a different tab/page also works. Double however, all of those methods will fail if you press the button/tab/page and then change the name. You have to change the name before pressing any of the buttons or this won't work.
No matter what else you change anywhere else on the screen, such as the conditions/graphic/options/etc., the event name will never save properly.
I looked around to see if anyone else reported something similar, but I didn't find anything. Something like this seems like an obvious bug, so I'm guessing it has something to do with me using the recently updated version with the new DRM. I was never able to try the old version, but after I had installed it, I did check the program files folder and I think that the version number of the exe(the tooltip that pops up when you mouse over it) was different than the new one I'm using now.