Hi, I remember you once emailed us, thank you for posting your questions on the forum!
Question 1: Is the link logo useful?
Yes, if you click the link icon, you can copy a url like the following so that you can see the specific tip immediately:
http://esotericsoftware.com/spine-tips#28-coin-ess
Question2:Slot overlay mode is not valid in unity after use. How to fix it?
That is more likely to be an incorrect setting in Unity rather than an issue with the Spine editor, so please show us your settings in Unity. For example, if you are displaying a skeleton using the SkeletonGraphic
component, you may need to enable Advanced - Multiple CanvasRenderers
.