UPDATE: I have found and fixed a coding issue that was added by the Loveless Route (it is part of Guillaume's route and unfortunately seemed to cause some trouble with the existing code), so thank you for bring that to my attention. If you wish to redownload the game and see if this is now working for you, the version you are looking for is 2.7.
However, I have been unable to replicate the issue with the Sofia and Etrillard scenes being mentioned. This might be because fixing the code issue has fixed that as well, or it might be that I am not making the specific combination of in-game choices that lead to the issue. Please could I ask you to send me details of the line/lines where they are mentioned erroneously and I will try to investigate further.
Many thanks again for playing