Thanks, you were right! I had 125% screen scaling setting (windows default). After changing it to 100% and recompiling project ("rebuild all" function) fonts are OK now (except one thing shown on the second of attached photos), but the problem is that all elements (fonts, icons, buttons, etc.) in Windows are currently so small, that it's very uncomfortable to use the system under that setting. I could change this setting only just before compiling and downloading project to HMI, but it's not comfortable, because after changing the scaling setting user has to be logged out and logged in in order changes to take effect. Is there another way to make it simplier? But still - thank you very very much for your tip :-)