An experienced Wikipedian gave me a list of reasons why he doesn't use the VE much. Number 2 was the inability to select the page title while using VE.
This has bothered me, too. I kind of got used to it, but I really don't like it. As far as I can see, this was done as part of T116755, but I really don't understand what is it good for.
Removing the user-select CSS rules will probably resolve this issue, and I don't see any problems that it will add.