Two home teams have won their respective matches, these include Lazio and Shakhtar. Lazio had to wait a long time and work hard because Celtic was really good at maintaining their defense until the 80th minute. Celtic's defense was no longer good after the 80th minute where they conceded 2 goals in less than 3 minutes between the 82nd and 85th minutes. Lazio's success in winning this match was making them lead the Group E standings and have great potential to qualify for the round of 16.
Milan, PSG, Barcelona, Young Boys and Manchester City are the other 5 home teams that I believe will win today. Feyenoord are doubtful as Atletico Madrid will be determined to win the match, but this match looks good for a draw with both teams sharing the points. Shakhtar's victory over Antwerp will force Barcelona to win the match against Porto, this will be very interesting because both of them do not want to lose the opportunity to qualify for the round of 16.
On the other hand, two matches out of the five mentioned home games are losing to their opponent in the first half. The two clubs are Manchester City losing to Leipzig by 2 goals, and PSG is losing to Newcastle by a goal.
It is a surprising scoreline result in the first half because nobody expects Manchester City and PSG to first concede goals against their opponent. Anyway, there will still be a second half to play. Maybe Manchester City and PSG will try to equalize or win at the end of the match. Who knows what football tactics and corrections Pep Guardiola and the PSG coach would strategize to see to their wins before the end of 90th minutes of the match.
The results of the first half were very unpredictable, I mean all the home teams conceded goals first even though some of them like Milan and Barcelona were able to equalize. Only Young Boys was able to lead 2-0 and close the first half with a win. Manchester City was the most unexpected team because they were 2 goals behind Leipzig. But Pep Guardiola doesn't seem to care about this match anymore, because Manchester City has already guaranteed themselves to qualify for the round of 16.
You're right, this was something of a surprise and I really didn't expect it to be that way. PSG still failed to find their best form at home, while Barcelona has not been as good as expected. But however, I still believe the home team will have a big chance of winning the match except Manchester City which has a 2 goal deficit from Leipzig and Feyenoord.