2.81 - Key frames not working? Shader emission settings? I have just been seeing if I could do a tutorial on a title animation, but the keyframes in 2.81 seem to not work properly? I set a keyframe in the shader editor and it sometimes sets and sometimes doesn't, then sometimes I can't see the frames at all.
The emission shader is what I am trying to set for animation. The other non-shader lights on a circle path, animate fine.  Is this a bug?
By default, the items in the Dope Sheet are filtered to only show the selected keys.

To change this you can uncheck Only Selected in the Dope Sheet filter as shown: