The behavior observed is basically exactly the same as what I described in my previous report on Preston Garvey's behavior re: radiant quests.
Once you have finished a
"Cleansing the Commonwealth" or
"Quartermastery" quest for either Knight Rhys or Scribe Haylen (located at Cambridge Police Station) and you go to pickup your reward, the second audio line after you say "Yes" is cut off every time.
"Here's your pay". - Knight Rhys
"Here's your payment. [...]" - Scribe Haylen