I want to like this game so badly. It seems like a lot of thought and care went into this game, but unresponsive mouse controls are too much for me to handle. I can handle a lot of incomplete games. but i really think the buggy cursor is a barrier for me.
That's an issue with GameMaker sadly, I have no choice but to wait for them to fix it... If the workarounds in the README don't cut it, I recommend simply playing the older version (available right under the most recent ones!), it essentially has the same content!
Sorry about this, I was very disheartened myself when I found out some people had this issue...