Xerigart, you NEED to disable catching the mouse cursor ASAP on Windows builds. This is a very bad unergonomic, user-unfriendly feature!
How did anyone think involved in the development think it was a good idea!? You cannot demand of people to know how to alt-tab and manage the active focus just to work with any other apps besides this game. Windowed apps are designed to work alongside other apps on the aktive monitor! Never ever catch the mouse cursor like that!
The user can neither move the app window as Windows intended nor use any window function in the upper right corner like close or maximize. Doing so will either catch the mouse and cancel any click or it will forcefully and uncontrollably move the window downwards until the regular user cannot interact with the app in any way besides forcefully terminating the task via task manager etc. The regular user SHOULD NOT be in this situation.
This is bad UX!
Sorry for my harsh words but I'm flabbergasted on failing the basics like that. Don't play with catching mouse cursors!