What should I expect when returning to Thailand on an ED visa after traveling?

Hi everyone,

just want to share my experience before 2 days.

I am on ED visa for 6 months, and i travel for 4 days to vietnam and come back through Suvarnabhumi airport i have my re entry permit already.

So immigration officer checking my passport and see I am on ed visa, then ask me what am I doing in thailand, I say study thai as soon I say that she switch conversation on thai, then I explain on thai that i cannot speak much and I just start it to learn, then she ask how long I study thai, what is the name of school and why you want to learn thai. Next thing she ask booking confirmation where I stay which of course I dont have because my thai gf book condo under her name. Then I call gf to come to the counter at immigration and they talk with each other.

That immigration officer was friendly and at the end she say and I will quote her "I hope you understand me why I need to ask these question, because many people overstay"

So long story short if you leave Thailand while you on ed visa there is pretty big chances that you will be questioned by immigration upon your arrival back.

I dont know if I see in this or another group that another people also get questioned, so just want to tell my story so you can be prepared.