When an empty track row is selected, the screen doesn’t show any value. So if the user wants to fill this track with any sample or set up, they have to unselect the row, select the sample, select again the row and then fill.
The reason behind this current and intentional is because “If there are no active steps, there are no values to show.” But let’s think it in another way. What if the user wants to make some previous configurations with delay, overdrive, repetition, etc. and of course select a sample and then fill? This will provide a sample filling with those pre-made configurations.
No, It’s just a workflow
Following this thread: Empty screen when row track is selected