"Comparison to null is expensive" and "unity lifetime check" icon on implicit lifetime check, but not on explicit

[shniqq]

If you compare a unity object against null, you get the "Comparison to null is expensive" warning and the "implicit check for unity object lifetime" icon.

If you then convert it to the explicit check per resharper suggestion, both hints disappear, even though the check is still performed.

Expected:
Both icon and hint for expensive operation should still be there.