Song Be Super Strong Plants

I was just playing on Song Be as a transport pilot and came in for a landing in the river south of Echo. I ended up landing on one of the small groves of plants that stand around 8-10 feet tall that are along the river bank. However, the collision model seems to treat these plants like a large rock, at least to the helicopters. You can see what ended up happening to my helicopter when I landed:
http://ift.tt/2sDR6xU

This seems like a very unusual property of these plants, unless somehow they are growing with titanium stalks. I feel like the collision model for these should be updated so that hueys can land on top of them instead of crashing into them.

Song Be Super Strong Plants