After installing qttabbar, a white frame appeared inside the explorer. How to fix?

Question

Windows

Since it was inconvenient to use Explorer, Windows decided to install a program to create tabs in Explorer. On the operating system, I have a dark theme by default (light eyes hurt). And after installing the QTTABBAR program in the explorer, a white frame appeared around the window where you can see the folders and documents. I really don't like it, is there any way to fix this

Thanks in advance for any help)))

Answer 1

Here is a person's screen, without a frame.
you can try to follow his config.
https://www.deviantart.com/unisira/art/Windows-10-...
here is another solution
https://www.youtube.com/watch?v=W1gAtxwJxbA
PS total commander...