When I use the latest version of Spine Editor, there is a chance that the viewport will render incorrectly when dragging the timeline.

I have provided a demo video in the attachment.
2019-08-09 10-32-12.zip

Erikari wrote

Hello! it looks like you're switching over many images in your project.
If you have many of them in your images folder, try unchecking Limit scanning to see if this allows Spine to load them properly: Images - Spine User Guide: Images node

Ok, let me try

Nate wrote

What happens on frame 25? I see many keys set on that frame, but I can't tell if that frame is hiding all attachments or if there is a bug. If you don't hide all attachments on that frame, could you post or email your .spine file so we can see the problem? contact@esotericsoftware.com We will keep your file confidential. We don't need any images.

I don't have the original project of this project in my hand. Because I am not in the company, I sent you another project by mail. This project has also appeared many times the same problem, but the trigger condition is not clear, usually copy and paste, or This problem is triggered when dragging the TimeLine.

By the way, this problem did not occur in version 3.7.

Nate wrote

Thanks, we got the file and tried to reproduce the problem, but unfortunately haven't been able to get it to happen.

The problem is random, in most cases it will be triggered when dragging the TimeLine, restarting the editor will be normal :tear: