I'm using Fedora 25 Workstation 64-bit with all latest updates installed. When using Gnome shell with disabled animations, some types notifications are not displayed at all. This is very easy to reproduce: 1) Run "gnome-shell-extension-tool -c" and create a sample extension. 2) Enable your extension in Gnome Tweak Tool and restart the shell/ 3) A gear icon appears in your systray. When you click on it, a pop-up "Hello world" emerges and fades out in about 2 seconds. 4) Now go to Gnome Tweak Tool and disable the animations. 5) Click on the gear icon again. Nothing happens! 6) Enable the animations and things work again. 7) This happens both with Wayland and X11 Apparently Tweener.addTween(text, ...) does not work when animations are disabled. This is clearly not how it is supposed to be. If I choose to disable animations I certainly don't want to miss some (possibly important) messages from my extensions.
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Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.