In the taskbar, due to the black background of the icon, the “F” flower shape of Figma is 25% smaller than the icons of other applications on the taskbar on average, making it difficult to identify. Moreover, the size of the icons on the taskbar is inconsistent. Since the dark gray background is very close to the Gaussian blurred background color of the taskbar, it seems that the background is almost integrated with the taskbar in the dark mode. Such a background is meaningless.
In the other ways you use the brand image, there is no need to emphasize the square background of the icon. So, remove it.