Serpentis Improved Covert Research - No 5th can

Hi

This is more like question…
After the recent patch all ghostsites that I have found were only 4 cans.
Is 5th can rng ?

I returned to game recently after 2.5 years and this stuff is new to me.
Thank you!

There was ever a 5th can? I only ever saw 4 containers.

yes but there was nothing in it.