Sometimes at random all of the dialogue choices get completely replaced with just a 1. Continue option. There does not seem to be any consistent trigger regarding this issue to easily reproduce it as it happens completely at random whenever it feels like it, which then breaks the flow of the story and forces the player to reload.

Here is just one example out of countless of times it happened, in this particular scene there are at least 7 different dialogue choices yet they've all gotten replaced;

[Linked Image from i.imgur.com]