Can confirm the case and it seems to be happening more and more frequently, now it really doesn't take long at all for it to happen. However the issue seems to happen only on station size with 2 to 3 deadend platforms with mechanical choose signal, namely on the North Eastern Railway network of bridgewater-brunel, only on Connell, Pitthorne and Nellingchester. It never happens on Bargate where there are only 2 platforms but vane choose signals are adopted. It also never happens on Great Peningpike where there are 3 platforms, but is a through station.