No, no need to reinstall. It's due to the fact a very little number of countries worldwide do not set their computer to the same display dpi setting.
So far most of the countries are using 96 dpi (per inch) and it's the case in France and that's why all my tools are designed for this density.
But you can also use 120 dpi, that is commonly used in Canada from what I heard about, which is maybe your case.
You can anyhow change this windows setting at any time just opening your control panel then choose graphics settings, choose the Parameters tab, hit the advanced button on the bottom-right and then, in the new window change the DPI setting from 120 to 96 and here you have all the fonctionnality of TeamEditor again.
For those asking, I'm not sure I could ever handle this alternative DPI setting natively in my tools.