OFB-12

Let me explain what the fuss was about. The screenshot shows the difference between the program versions. In the old version, the program would sometimes disconnect and, when calculating the coefficient, would declare a draw against itself. At the same time, players could meet each other again. In the latest version, the program doesn't disconnect, but instead declares a conditional draw for the players and calculates based on that. As a result, the score is noticeably lower. Most likely, this is correct, based on the algorithm:

if an opponent doesn't show up, the match is considered a conditional draw
in the absence of an opponent (with an odd number of participants in the Swiss system), the match is considered to be played to a draw against oneself
if a round is missed at the beginning of the tournament (due to being late) or at the end of the tournament (due to withdrawal), the matches are considered to be played to a draw against oneself

But still, we decided to give Tvarina a chance to prove himself and disprove the conspiracy theory))))

P.S.: +0.5 or +1 difference doesn't matter, the order of ranking is the same, I checked. The overall table is also attached.