As someone who went the m2f route, for a while GLBT spaces seemed like a "safe space" to begin interacting with others, a safe place to go when I first started wearing female clothing, etc. Looking back all I can see from here is regret. I was going to list all my bad experiences but instead I will just give a couple. I had a transgender woman out me as trans while I was with a girlfriend I hadn't told yet, it was the very early part of a relationship and the transgender woman nipped it in the bud and destroyed any chance I had of allowing her to get to know me as a female, that was the end of that relationship.
A gay man I met at a bar some years previous came into my place of work (he had always been nice to me, bought me drinks in the past). Instead of saying hello to me he told several of my coworkers that I was really just a man pretending to be a woman.
I have had some bad experiences but when it comes to GLBT "friendly" spaces... that is where the majority of ignorance, prejudice and just plain hate have come from, that I have experienced. I have had far better luck just approaching other men and women as a woman than I ever had trying to gain acceptance in GLBT "friendly" places.
Also people who are GLBT are better at spotting someone who transitioned and often times just love to let you know it.
I avoid GLBT spaces like the plague, for my health and my sanity.
Sorry for your bad experience. I recommend avoiding GLBT spaces.