Questions About "Revealed" in Raid

Hi Everyone!!

Was thinking about some game mechanics the other day, and found I had a few questions regarding the "revealed" effect in a raid setting:

How does the reveal effect upon fixation in a raid work? Is it automatically applied upon initiation of the fixate, or does the boss need to actually hit you before you're revealed? Can a thief's shadow meld remove this reveal? And if so, will the reveal then be reapplied immediately after the removal, if the player is still fixated? Or will returning to stealth force a different raid member to become fixated/ the boss to ignore the stealthed player?

Just want to understand more about this mechanic… really appreciate every and all responses! Thanks!!!