Screen flashes black while opening with TabBarCoordinator

[SubvertDev]

Hi, I've got an issue that I can't eventually figure out.

I'm using TabBarCoordinator as a starting point in my app, but right after startup my screen flashes black for a second.
I've tried solutions from #172, but none of them did help me, except injecting custom UITabBarController with it's view.backgroundColor set to .systemBackground. But if I do that my tab bar flashes for a second too because it's translucent and tries to mimic it's background, so I need to disable translucency in my custom tab bar which I don't really want to do.

It's easily reproducible with demo app by changing router in AppDelegate to HomeTabBarCoordinator(), for a more visible result you can inject custom tab bar with background color set to red into that coordinator.

Did I do something wrong and how do I fix that? Thanks.