Please make it an option if you want to be able to select objects that have been hidden in the scene (faded to 0% transparency in an animation). This new default that faded objects are selectable is a major pain whan working with animations where you have to show and demonstrate the inner workings of mechanical products. You have to do most selections in the scene tree or in solo-mode, which is rather timeconsuming – especially working with large models and assemblies.
It could be under options in the control panel > user interface
Either
Treat faded objects as hidden (objects faded to 0% will not be selectable in viewport)
OR
Enable selection of hidden objects