In
Investing>Dashboard>Value over Time chart, the calculation of "This Year" figures is based on the beginning of year value on 12/2020 (which is actually 12/31/2020, as I understand it). Image 1.

Whereas, in
Investing>Performance>Portfolio Value vs. Cost Basis chart, the time frame,
Year to date sets the beginning of year on 01/2021 (which is 01/31/2021, as I understand it). This chart seems to be missing all of January results. Image 2. This start date in image 2 also extends to the
Growth of 10K chart.
I was expecting both start dates to be the same (12/2020). What is the nuance here between "Year to Date" and "This Year". I assumed that "This Year" IS "Year to Date" Who's in error?
Using QW HBR R34.24.