Aseprite 1.3.1 UI with multiple windows doesn't show the correct cursor

Aseprite on steam v1.3.1 Windows 10.

Only happens when “UI with multiple windows” is checked. Sometimes
if I want to to resize the preview window it shows the crosshair cursor instead of resize cursor. It able to resize but doesn’t show the correct cursor until the action being done.

Seems like the trigger for showing the correct cursor become smaller when not focus on the other aseprite UI.

Also if I uncheck the UI multiple windows and click apply or ok, it will not take effect until I close and reopen the other aseprite windows.