I've found this issue where auto plot does not want to go through these gates in "on foot" mode, even while they are tagged for on foot-access in OSM:
Example:
https://www.openstreetmap.org/node/17056090
Since recently it has this problem for all of the gates around this forest (the gates were there before but auto-plot worked without issue then), but I'm pretty sure it is labelled correctly in OSM?
Hi Pieter - I'm not sure without looking into to it further, but I think it could be due to the fact that the gate is shown as "Locked".