Rival Wings / Mch Flamethrower

Frequency: Should be reproducible, happened to me 2 times now.

Area and coordinates:
https://i.imgur.com/HX9B476.png

https://i.imgur.com/DBOc6c7.jpg

Steps:

Players usually rush the generator, but some are on the ground level(the caves) not shown in the picture, that is below the generator. They are collecting the items there. Occasionally you get hit by flamethrower dots even though there is not a single enemy around you in the caves. The machinist flamethrower ability seems to make no difference between the z-coordinate/height of the targets.