From the GNOME subreddit: Just wanted to know how to get rid of screenshot animation? In context, I'm using an app that tracks my work and perform a screenshot from time to time. However, I'm annoyed about the flash animation. I removed it before but I can't find the blog post now that's why I can't remove it again. Hope you guys can help me, thanks!
https://files.mastodon.social/media_attachments/files/111/240/547/297/104/071/original/11861fd45c1a8cd6.png