This is an annoyance with Fedora. When for example I choose shut down from the action menu [Cancel] is always highlighted and i have to take the extra step of mouse movement and highlight [Shut Down]
i really appreciate the protective approach but for me i know what i’m doing by the time i’ve selected shut down from the actions menu and just want to click enter one more time and go!
This is not a fedora specific issue it is a gnome implication of shutdown approch now if you want you can do it from terminal
Here is a guide.
https://www.cyberciti.biz/faq/howto-shutdown-linux/
Now if you want to ask for a feature request about your specific at git.
(GNOME · GitLab)
Btw you don’t need to do mouse movement when you select power off and tap the right arrow and enter it will do this for you.