Yeah, could try validating the installation via steam.
Can't really see the value of it though, editing entities in the editor is all I ever use.
F9 edit used to be great for editing and painting terrain in-game, but when DX11 was added editing terrain in game became really finicky, and painting became a chore.
Perhaps the next update will address all these little issues
OldFlak....
aka Reliquia
i7-4790 @ 3.2GHz. 8GB Ram. NVidia GeForce GTX 1060 6GB. M1: Acer 31.5" @1920x1080 M2: Samsung 31.5" @ 1920 x 1080. M3: Acer 24" @ 1920 x 1080. OS: Windows 10 Pro 64-bit Insider.