Regarding the Gloom Stalker ranger archetype (XGE).  It is stated that

"While in darkness, you are invisible to any creature that relies on darkvision to see you in that darkness."

Does this (limited/situational) "invisibility" end if the character attacks?

Thanks

It does not. Most of the time, if something is specified in one place and not specified in another, that means that it doesn't happen in the other.

It does not. Notably the invisible condition does not have any kind of clause saying when it ends. You are confusing it with the invisibility spell.

Thank you!