Hello, excellent game.
I have one suggestion - when I have mouse cursor over left menu (basic or extensions), try to click an action (eg. Build Town, Collector, ...), but miss it and instead click an area next to the button, my player moves in that direction. It would be better if the piece wouldn't move (so the cursor focus will be on menu area, not "under" it on the map).
I don't know if there could be a problem after this change thatsome area on the left will be unreachable - it depends how maps are generated (if there is always some water space on the left), or scrolling on the left edge can be extended a little bit, that the most left map field will be always reachable.
Thank you.