Hi Andrei!
Thanks for the reply, you've been exhaustive enough, then I'm posting the considerations only about points (1) and (2):

(1) START PAGE BUG
your explaination was perfect, there's only a little problem using JS functions in title value assignment, but... DON'T WORRY... ... it was solved easily always with a JS workaround, so I'll not bother you with that!!! :P

(2) TEXTBOXES PER-TRACK BUGS
...to reproduce the textbox8 bug you should not insert a value from the "Record Properties" window, but directly selecting a track and insert the value in the textbox8 in the "Track Properties" window.
To easily check the bug you could insert from the "Record Properties" window the value "Test8", so all the tracks will have TextBox8 filled with this value; then choose a track and in the properties window change the value, then press ok.
When you'll go back again to that track's properties window, you'll see the value is still "Test8".

That's all ;D
Cheers
Emanuele