Wow, that’s quite a lot of work around for something that you just change in the app lol (laughing with you not at you).
Just right click the page name in the Pages list, There you’ll have tabs (sorry waiting on computer fix so I can’t look to see what each tab is called), but the first tab has the place you enter your page’s title in, as well as other tabs that are “specific page” based.
OKI - sometimnes it's so easy - I was searching sometimes for that, but did'nt check the Page's properties ;-) Probably i should have watched all Tutorial Videos in deep, as i did not find it in written version...
OKI, Finally, it's left, that users know, now how to change it in live version
And for those, searching for that Properties, they know now also.