I love the chart feature that puts a line(grey, in this case) at the previous close. I discovered this feature just this week. I've been using it on my weekly charts and it's been great. However, I woke up this morning to see that the previous close line on all my charts is no longer accurate(shown below). I went to the hourly charts and found that the previous close line on all of my weekly charts corresponds to the close price of 8/23/2017 16:00 on the hourly charts for each pair. I'm using Oanda demo(regular, not v20).
Also, I've noticed that the dates for each candle on the weekly charts are marked for the Friday of the previous week, rather than the Sunday of the current week. Is this intentional?