[Doitsu]

Originally Posted by pgfiore

Using this example, "èacquistabile" (code view), I need two arrow hits to move from "è" to "a"...

That's because the accented è character is composed of two characters:

e U+0065 LATIN SMALL LETTER E

 ̀̀ U+300 COMBINING GRAVE ACCENT

I.e. this behavior is by design, because most Unicode editors behave this way.
Most likely your display issues are caused by these and other combining characters. Try replacing them with combined characters.

For example, replace U+0065 & U+0300 with:

è U+00E8 LATIN SMALL LETTER E WITH GRAVE

You can select this an other accented characters with the Windows Character Map.

EDIT: To identify the problematic Unicode characters, visit this website, paste a paragraph with accented characters and missing spaces into the Unicode Text box, click Convert and post the results here.