when i define materials, i can open the water table menu only by clicking near the center, as in the first image.

by clicking on the right (where it is supposed to click), as in the second image, menu cannot be opened.

it's strange because I don't have any issue. it drops as I click on it.

one thing I realized is that your fonts are slightly bigger and length of the label on the left side is out of range comparing to mine. that might be the source of issue.

I'll take a look and get back to you.

i've reduced the font size from 125% to 100%.

now it is possible to open the menu by clicking on the right but only when "none" (i.e. "nessuno" in the localization) is selected.
when "falda" is selected (like in the images i posted), menu can be opened only by clicking in the center.

if it helps, switching from "nessuno" to "falda" causes the shifting of the box on the left to create room for a new box (Hu parameter).

i use hyrcan on win7pro.

Qt has an option to automatically adjust the font size based on the screen resolution. I'll deactivate that to see if it get resolved. unfortunately, I don't have the Win7 to recreate the issue so I'll make the changes and send you the program to check.

Hi reversi,

I just emailed you a link to temp exe file. please download the program and let me know if issue still exist.

sorry, but that is not the solution.
i don't know what it could be, but i can live with it 

also, i understand that you can't.