Pdn 5.0.7
Running the built-in Noise/Median (default settings) on an object layer with background bgra = 0,0,0,0 changes this to bgra = 1,1,1,1.
It does this for the whole layer regardless of distance from or even presence of an object.
Test: Add new layer, use eye dropper to check values, run Median, check values again.
It's the change in the alpha that is most annoying as it messes with effects that detect object edges but is visually indiscernible.
Possibly small implications for file sizes too perhaps?
I vaguely remember this issue from way back ... (quick search). I mentioned it in my Object Bevel thread in 2016.
Just wondered if it's likely to be looked into?