Edges and maximize are not responding, just works if i move to the top monitor.
Main monitor, bottom ( 1366x768 ), top (1920x1080).
Works well in top monitor, but not at bottom.
Workaround (annoying):
Screen options, turn off second monitor, restart spine, turn on second monitor, and i can resize in main monitor (bottom).
But we have another issue here, if we put Spine window in second monitor only resize to the resolution of first monitor (this maybe is a normal behavior, because is not activated the second monitor when spine is executed.)
IDK if you do some, but is working properly right now
