https://bugs.winehq.org/show_bug.cgi?id=44843
--- Comment #1 from Alexandre Julliard julliard@winehq.org --- Are you sure that it was using the system cursors previously? If you change your Linux desktop to a different theme do the cursors change in Wine?
I expect it was using the Wine cursors all along, the patch only made them look different. Using the Wine cursors is still a bug, but I don't think the behavior has changed.