OK, it looks as if there are some differences between the Lenovo tablet pen and the Toshiba tablet pen. I can use either pen on my Lenovo tablet, but my writing style gives trouble with the Lenovo pen and not with the Toshiba pen.
I have a sample PDF comparing the results, based on a “just firmer than medium” Tip Feel option in the Pen Tablet Properties control panel Pen tab.
As you can see from the sample PDF, with the Lenovo pen, a stroke is added joining the bottom of the final g to the dot of the i, while there is no such issue with the Toshiba pen.
[And it is supposed to say “very fast” not “very last!”]
Either I need to press less hard, or actively stop the pen when I finish the final g, or I should just use the Toshiba pen!