textArea component normally grows vertically with user input. it does not, however, expand with placeholder text. i believe this is a bug.
as a workaround, simply count lines in the placeholder, and feed it into textArea > Appearance > Max lines with a JS one-liner
That's the expected behavior of placeholders for any input, not just on Retool but on anything running HTML5:
Without CSS, we would add inline styling to fit longer placeholders:
Your workaround is the best way to fit long placeholders on Retool. 
gotcha so it’s a broader precedent. thank you for the education! low-code no-code may be giving my ignorance too much comfort
