Description and Short description

As their names imply, Short description [short_description] is a field for a short description of the task (with a default character limit of 255), whereas Description [description] field is for a more comprehensive explanation of the issue, often including specific instructions. Description has a default character limit of 4,000 characters.

The default size of a text field on the form is determined by its character limit. If a field allows the input of 256 characters or more, it is displayed as a larger, multi-line input box, whereas 255 or fewer characters means it'll display as a single-line input box.