I don't see this mentioned anywhere, so maybe it's a bug? Prior to 3.7.86, deselecting all objects (space bar) would show all keys for the active animation in the editor. Now, it only shows Slot color keys in this state. My filter is disabled. Is this an intentional change and, if so, could you add the option to revert to the old behavior? I found key deselection to be a great time saver for editing the animation at a high level.