When I intentionally hide it's because I am in no mood to attempt to please others based upon their perceptions of me, which would require me to care what they are thinking, which is not in my interests at that time (I have more important things to think about/do). I have most often intentionally hid from guests who visit my parents (I don't know them and am not sure I would care to know them) or from people who like me who I don't like. If I am curious enough and feel comfortable, I won't intentionally hide. I don't hide from people who I like, nor do I hide from people who I don't like as a rule- but I will hide from people I dislike who also dislike me if our encounter would involve non-productive conflict, exclusively, or for example my unwillingness to act in a certain manner could make the other person or people around me uncomfortable. In that respect, I feel I'm doing both them and myself a courtesy by remaining hidden.
How does one know I am intentionally hiding? I tip-toe around quietly or silently, usually at opportunistic moments based upon the habits and the schedules of others- remaining unseen in the same building/room as you (not just as a matter of not wanting to draw attention to myself but as a matter of finding a place where I'm pretty sure I won't be found/bothered by other people's expectations of me). I intentionally hide in public places when my attendance has been forced due to social obligation which I am not comfortable with, not something I've subjected myself to out of my own desire but because it served some other purpose which is not necessarily publicly known. I would often hide in church, for example, or leave the building completely to entertain myself outside (there was a playground with a swing set and a baseball field which were easily accessible).
As a teenager, I became quite good at hiding, literally, in certain nooks and crannies of my high school. My heart would drop when someone would find me to then approach me- my immediate thoughts being: "God dammit! Leave me alone, asshole! Does it LOOK like I want to talk to you? No... It doesn't... You must be an extrovert with seemingly good intentions who doesn't understand my needs at all. Just go away..." I've done this same thing when at work, especially retail- I can only take so much base and philosophically non-fulfilling human contact before I have to repress mental urges to kill people and must get away to re-center myself.
Even my first job, as a retail photographer, allowed me a private working space between shoots to recover where I could hide- not from my boss but from random strangers. When I'm constantly socially exposed I quickly become tired and irritable- so long as I have a place to recover, I will remain in good spirits, be better able to fulfill my duties and then feel comfortable to again venture out when I must.
I felt much less of a need to hide when I was working as a parking valet (hospitality), however, due to the fact that the job involved periods of alone time where direct supervision of me was not necessary. Not only that, but I got to work in a large garage which had been excavated below an office building, lending it that feeling of being hidden away, private and infrequently trespassed upon. Everyone who went in and out of that place I knew a vast amount of personal details about; they were not random people- anyone who entered had acquired the privilege to be there, and I had a friendly relationship with all of them, even those who I did not particularly like (the 2 who flirted with me, yech). Being in that "cave" surrounded by people who I felt happy to work for and with made leaving at the end of my shift all the more pleasant because I would literally ascend back into the sunlight and be able to appreciate the change.
Of course, then I would go "hide" out in the open at a public park for an hour or so because I didn't want to be stuck in the confines of my apartment nor necessarily interact with my roommates (an older brother and his best friend). My intent was not to intentionally avoid them because of dislike, but because I needed to recover in a neutral space- where nothing was required of me and I could focus on my own fulfillment before placing myself into yet another unpredictable and possibly uncomfortable social environment. In that regard, in an inverted sense of what I've previously said, sometimes random strangers [those who have no expectations of me, often found at parks or other places of public recreation] are more pleasing company than people who I actually know... as is the environment. There are just places which exist that offer peace, harmony, contentment, freedom from focusing on fulfilling the needs of others, which lift that heavy sensation of suffocation that the obligatory avenues of social exposure can at times impose on me.
If/when I am in a comfortable environment, I feel no need to hide.
P.S.
My impulsive desire to hide has often frustrated and/or panicked my ENFP mother, especially during my childhood- despite the fact that I would always show myself when it was time to return home (meet my parents at the car or at the place I knew they could be found at a specific time, etc.).