Units management from taskbar of game , signal button and canceling reserching or unit creating doesn`t work

when i try to select just a unit from the list at the bottom of the screen , i can t
i click the signal button near minimap but nothing happen
i can`t stop something from reserching or creating if it is the first , but i can cancel things that are waiting

This happens when you increase the hud to above 110% or something Lower the hud scale.

Options -> Interface -> Ingame HUD scale

you are right
thank you very much

I have the same issue, plis fix