Terrain in this game is really wonky. Like I'm glad they added some details, but most of the time it just works against you (doesnt work against the enemies tho, they'll fire and kill either way!).
I do think they need to polish the terrain a bit (or alrdy have and is included in the main game, idk if there will be a patch before release, but game is almost 2 months away so should be a small patch but oh well!)