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Animation/value keyframe slider doesn't appear in dope sheet
Confirmed, LowPublicBUG

Description

Blender Version
Broken: version: 2.80rc1

Short description of error
In Dope Sheet you can't see the changebles values of "Object Transforms" unless you go to "Shape Key Editor" and go back.


Exact steps for others to reproduce the error
1 - Open blender, change to "Animation" workspace
2 - Insert any key frame to the cube.
3- Expand the "Object Transforms" (with that little triangle). Note there's no values in the line of keyframe.
4 - Change from "Dope Sheet" to "Shape Key Editor" and go back to "Dope Sheet". Now you will see the values of the keyframes (about the transform you did).

You can't see those numbers without changing the mode.

Event Timeline

Display of these sliders is controlled by Show Sliders option under View menu.

Switching to Shape Key Editor automatically enables this option. But switching back to Dope Sheet does not automatically disable it.

I don't know if another behavior will be less or more annoying for animators.

You are not forced to go to ShapeKey Editor mode to enable sliders.
If you want to display them by default, you can. You just have to save startup.blend file with option ON.

Jacques Lucke (JacquesLucke) lowered the priority of this task from 90 to Low.Aug 7 2019, 12:37 PM

@ronan ducluzeau (zeauro) has the right explanation. I'm also not sure what the best solution is. It feels like the actual bug is that changing the mode changes the "Show Sliders" option in the first place.
The current behavior is not too bad, but it does feel a bit buggy indeed.

@William Reynish (billreynish), @Hjalti Hjálmarsson (hjalti) opinions?

I would prefer to show sliders as default. Cause it's a nice and helpful feature to stay hide. And if you hide it when switching back to "Dope Sheet" (even though you can make it appear in the menu), feels like this is a "Shape Key" funcionality.

I just had a discussion on the topic with @Hjalti Hjálmarsson (hjalti).
The best solution from an animators point of view seems to be the following:

  1. Make a distinction between properties that use a slider (have a min and max) and those that don't.
  2. Have two separate "Show Sliders" options, one for each kind of property.
  3. Show the sliders for properties with min/max by default.

I'm not exactly sure how well we can detect which properties will be shown with a slider, but it should work.
Having two options might be a bit confusing, so the naming would have to make this distinction clear somehow.
Not sure what the right terminology would be for these two kinds of properties.

From a developer point of view the simplest solution would be to just do not change the setting when switching to the Shape Key Editor (why is this a mode in the first place?). It would probably be off by default.

Germano Cavalcante (mano-wii) renamed this task from Animation/value kryframe slider doesn't appear in dope sheet to Animation/value keyframe slider doesn't appear in dope sheet.EditedWed, Feb 5, 4:26 PM
Germano Cavalcante (mano-wii) updated the task description. (Show Details)
Germano Cavalcante (mano-wii) changed the subtype of this task from "Report" to "Bug".

I'm not familiar with this area but I believe it's a bug.