I started encountering a bug yesterday where my after will not allow me to click on any effects or presets in the effects and presets window. I am still able to add effects by right clicking my footage and choosing effect.
You can see in the screenshot that the create new animation preset button at the button is not appearing.
The only way I am able to fix this is to reset after effects multiple times. I dont even know where to being troubleshooting or what information to provide.