Cant traverse tower

I'm playing from PS5 in DoH standart.

When I've placed in tower one waystone, and after that put another (with square symbol) the waystone dissapeared, and tower can't be started. After searching on the map, those extra waystone, that I've put into tower was inserted in near map. After taking back to inventory this waystone from map - tower can be played.

I think, we shouldn't have possibility to insert multiple waystones in tower, especially when they go into another map without any information