The writing part wasn’t very good before the latest update. Due to the fact that Thai is a structured language you could often just guess how to fill the next position, the other options just didn’t make sense. I use position here as you don’t select letters individually instead you have a combination of consonant, vowel, tone mark etc. But the latest updates makes it even worse, now we have a word going into one position (and doesn’t fit in)
The correct solution is the most left (water).