The chat window has two small bugs: after the top bar is clicked it and the mouse is (even slightly) moved up the chat expands instantly with about 200p. This takes me to the second one: it doesn't detect the upper edge, hence it jumps out of the screen if it was previously two high, having no way of resizing it afterwards.
SUGGESTION: the trade window it tends to get overcrowded with offers (at some point yesterday I had about 3 screens worth of scrolls) and things will probably get out of control once the game will be released hence I would like some advanced filters (eg.: Show me only the ones that offer a,b,c,d and/or the ones that require x,y,z, with some additional "more than/less than/between" which is not compulsory, but would be nice).