I noticed two missions has a strange single line instead of multi-line texts.
One location, from Assault on the Control Room mission, is in the tunnel going out of the tunnel. Screenshot:
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=3440283974

The other location happened on a different mission, The Maw, when you enter the bridge room. I wasn't able to get screenshot at the time.