The Thai team had expected full points from the match against Indonesia in a tough group that also has hosts UAE, Malaysia and Vietnam.
Thailand kicked off on the right note, going ahead in the fifth minute through Narubodin Weerawatnodom. However, Indonesia who entered the game as underdogs, levelled scores in the 39th minute through Kadek Agung.
Thailand edged ahead again five minutes into the second half through Adisak Kraisorn, but gritty Indonesia, who are at the bottom of the group, once again tied scores in the 60th minute through Evan Dimas.
Thailand will play the UAE on June 7.