For example - I copied 'Username Hey' and pasted it in ignire filed and saved (it got saved), then copy pasted this username 'Username Hey' to ~Find Members field and clicked it, then the username that appeared in Ignore field was different than 'Username Hey', for easy words you can say it was 'Username not_Hey' - And the 'Username not_Hey' post adding to the field got removed from the field after I saved that list.
So do I need to rest assured the person 'Username Hey' will not be able to message? or I should keep in my mind the possibility of 'Username not_Hey' to be able to message me ?
Op your statement is kind of complicating but let me just say that if you're unable to find the "Hey" which is an existing username in the forum in the search space or find member, it could be as a cause that you blocked the username like "blacklisted" the "Hey". And by so doing, you'll not have any networking linkage with the username anymore not until the blockage is lifted.
So it's neither can you or the username have any form of interaction with you.
I don't know what's complicated here... All you have to do is insert 'Free Market Capitalist' in Find user field and check if a username 'Poker Player' is shown, do you want me to babysit you for this basic step to?