Whenever Vulkan shader compilations have to happen (on Linux Desktop Environments), the main Steam window is opened. This is tedious, because when starting games from places such as the desktop shortcut, or (your version of) the start menu, I have to wait for the shader compilation process to finish, and *then* re-minimize Steam, potentially having to Alt-Tab out of the game if it launched faster than I could minimize Steam.
I think the progress for this process should be moved to the *Starting Game* window, the same way the redistributable installation process is handled.