Generally the FX string is extremely small. I don't have a specific module in mind, but take rules in an offering as an example. See attached image.
When dealing with long strings this field is quite annoying to work with, and I often have to type them out in a text editor and paste them in, thus not getting the benefit of the "suggestions" SMA-X provides when writing these strings.
Would love for this field to be increased to a textbox instead of a small string.