Using FinalBuilder 6.3.0.1712, the "List Iterator" action will skip the last line if the last line consists of a single character NOT followed by a newline.
To replicate:
1. Create a variable "X"
2. Create a "List Iterator" using variable "X" with the with some text with the last line having a single character, e.g.:
"A
B
C" <-- no newlines added here.
3. Then add a "Log Variable Values" action with the variable "X"
Run. The actions should be run twice instead of 3 times.
This can be worked around by adding extra blank lines to the end of the text in the ListIterator.
Thanks