Hi Gruk.
The top bar dissappeared the way it’s supposed to, however the task bar remained visible in full screen mode (that I triggered in the events like you did).
I was not referring about the maximize button.
Btw. it happened in my Windows auto installer file, and not when I ran the project through Gdevelop directly. For now when I do a normal zip desktop build on Windows, it also works (maybe computer restart helped?). But I cannot test the auto installer file anymore because I have a new problem.