The limitation actually seems to be two-fold: There’s the 260 character limit you mentioned, which shouldn’t be that much of an issue in my book. I doubt anyone will write really exceptionally long stuff in the journal. The more limiting factor is that any input is truncated after 20 “words”.
Here’s two examples that show this:
Input: (500 characters)
11111111112222222222333333333344444444445555555555666666666677777777778888888888999999999900000000001111111111222222222233333333334444444444555555555566666666667777777777888888888899999999990000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999000000000011111111112222222222333333333344444444445555555555666666666677777777778888888888999999999900000000001111111111222222222233333333334444444444555555555566666666667777777777888888888899999999990000000000
Saved String: (260 characters)
1111111111222222222233333333334444444444555555555566666666667777777777888888888899999999990000000000111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999000000000011111111112222222222333333333344444444445555555555666666
Input: “1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30”
Saved String: “1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20”
The first limit I don’t really mind, the second one can really cut you off in the middle of just the second sentence.