Level 9 direction swapping bug?

[notchris]

Deets about map layout and possible puzzle ahead;

SpoilerShow

In the top right hand corner of level 9 there is a u-shaped corridor, and whenever I walk along it my direction keeps getting switched 180.
At first I thought it was a graphical bug but then I noticed my compass.
Is this planned or is my computer about to explode from so many straight hours of LoG?

[Arech]

SpoilerShow

hidden 180 turns are normal in these kind of games
it's intended.

[schallmau3r]

*laughs* i didn't notice those and i was wondering: damn i have been here before.