Hi, not sure if this counts a bug, but as you can see in the attachments, the actual date and the scale (e.g. May 1) are not really "aligned enough" and can cause some confusions if user didn't click on certain data point.
I understand the space at X axis is very limited so maybe use date format like "05/01" can be helpful? Though some countries uses "01/05" to indicate May 1 I guess