Using Style4: Prograss Bar temperaily disappear

[Raygooo]

when using style4 the prograss bar will disappear temporarily when running the demo
:p

[Kidsunbo]

I have noticed this problem. It seems that the flash only shows up in the terminal of CLion. You can run the code in the terminal rather than that in CLion.
You don't need CMake installed, just type the following command (Make sure you compiler support C++17):
g++ main.cpp -o main && ./main