This is exactly how it is mapped. Voice instructions are taken from the angles of the junction or TIOs, Lane Guidance is taken from the Lanes tab. There is no influence of one to the other. This is when we need to think when to match road markings or voice instructions for Lane arrows.
Personally having the voice to KL but arrows showing left lanes continue straight works as you are keeping in the left 2 lanes.
But that’s what i’m saying, Lane Guidance display is influenced by turn instructions.
At a normal junction you wouldn’t see any lane guidance for straight ahead but because there is a turn override, Keep Left, this causes the lane guidance to be shown for straight ahead.
I wasn’t aware that this was in doubt. The Wazeo page states that LG won’t be shown when no instruction is given, implying that it will be shown when there is an instruction.