Bug in My Usage

[#1]

I've been keeping a close eye on my usage recently because much of my allowance was used up in the first 10-12 days of this month and even with careful usage I'm nearing 8GB with a couple of days left.
Anyway I noticed this today. Note the date on the last day compared with the day before.

[#2]

Hi there,
This is something that we have already picked up and raised as a problem.
Agree that it looks rather silly.

[#3]

Not a big deal to me but just thought I'd flag it up in case it's a symptom of something bigger.
Good to know you're on it.