2018.26 S100D June 2017
Happens to me today. Outside temp 27 and super humid, inside set to 21. Got warm and humid air for a few minutes. Manually cycle ac off and on, decrease set temp to 20, it started to blow cold again. No idea if my actions fixed it or it was just a correlation. Not good.
See attached pic for interior temp spike and subsequent recovery. Note the falling exterior temp, it was a hot day and a thunderstorm rolled in. As the happened, humidity rose to near 100%