This along with every other bug I am about to post (found while testing Sarpadia) has been duplicated in a test quest I made. Click here to download it.
If you do not press A to hurry the intro string along then a portion of the regular string will be truncated.
Here's a screenshot:
Verified in your test quest. This is an interesting bug, I must admit.
F-f-fixed!
Sadly, this bug is still present in build 777. 😞
Admittedly this is bad quest design (pick either an intro string or a regular string, not both... I removed such occurrences in Sarpadia prior to release) but I suppose it's something that should be fixed nonetheless.
This bug is still present in Build 798... 😞