I have a new habit that I have checked exactly once, a week ago from today (Sunday). However, in the chain it incorrectly indicates that the habit was performed yesterday. When I click on that habit and select "Last Week" from the drop-down it confirms that the habit was not checked on any day except last Sunday. Reloading the page does not fix the bug. I do not see this bug with other habits, perhaps because they all have more than one data point each. I am using Google Chrome Version 46.0.2490.80 (64-bit) on OSX.