QT, Windows how to solve the problem with fonts?

Question

Qt

Hello.
The problem is this:
There is a git repository with a ready-made vlc-based video player application with custom fonts, and there is a production version built from the same repository as an exe via inno setup. When I install the production version, everything is OK, all the fonts are as they should be, but if I build the project myself, then the fonts are not correct. I changed only the .pro file in the project to change the paths to the libs. There are fonts in the repository, I copy them to the exe folder. I even deleted these fonts manually from Windows (MB overlaps somehow), the result is the same.
QT 5.3.1.
Has anyone encountered this problem and knows how to solve it?

Answer 1

Problem solved. The new version of Qt for some reason determines the font size differently, changed the size manually in qss and everything is ok.

Answer 2

QML or regular widget application?