This bug only seems to happen when editing html code... in PHP files I couldn't reproduce it...

1. When you type, the typing cursor seems to be about two characters "behind" the visible cursor.
2. Extra space is added...

With this, the version ist absolutely useless... because you don't know, where are you typing at the moment. (build 4048).
The old 3.x Version is running fine...

I'd recommend you either uncheck "monospaced font" (Tools->Settings->editor appearance) or just change font to a properly formed one.
It's known that some fonts have bogus values in their internal structures and may cause the effect you reported.
v3.3 works because it uses different way of rendering fonts and does not support Unicode.

BTW, please attach screenshot with "show special symbols" turned on.

thanks, this seems to help... Kindest regards and merry xmas and very happy new year to all of you!