As was discussed here https://github.com/ValveSoftware/Dota-2/issues/1588#issuecomment-485587446
Manjaro patch to steam-manjaro breaks font rendering as was seen in the following topic: CS:GO - no text being rendered
I'm posting this just to provide awareness of possible future problems caused due to that patch and for a way to people to figure out what went wrong.
Uninstalling steam-native, or running STEAM_RUNTIME=1 steam should be enough to circunvent the problem. But that wouldn't change the fact steam-native is currently broken without one of the solutions proposed here: https://bugs.archlinux.org/index.php?do=details&task_id=62095
An update to steam-native to implement a solution, while pehaps hacky, would allow things to work out correctly.