Always show the dock? (even with apps open)

[Android Central Question]

I have an Android 9.0 car stereo unit

Of course, it's permanently in landscape mode.

I have the dock set to the right-hand side of the screen, with the apps I use most.

However, when I launch an app, the dock disappears.

Is it possible to always display the dock?

The unit can not be rooted (as far as I know).

I'm happy to use any launcher/tweak.