A question about rolling starts and lane switch

[nmpcs]

Yesterday I was racing at Kerpen and I made the best time, so I began the rolling start at the left side.
When I reached the corridors I took the left lane but the red arrow was on the right lane, so I was DQ.
Why would I have to switch lanes if I was put in the left one to start? Is this some kind of bug or am I missing something?

[LauZzZn]

its the same as wackersdorf. i dont know what it is but just go to the red arrow.

[nmpcs]

Yeah, I tried to go to the red arrow but the thing is, it appears right after a left corner so it can´t be seen before.
If I knew I had to switch lanes I had position myself better earlier.
So it happens on Kerpen and Wackersdorf...  Are there any more tracks that this is happening and can it be fixed?