Tool Tip displaying Legend case in CAPS

Hi Everyone,

We have observered that when we hover mouse to any of the visual in report, the tooltip which displays Legend only in CAPS irrespective of the upper case or lower case. It is one of the feedback we have recieved from Business User as it is very tough to read.

Is this kind of bug or the expected behaviour? 

Below is the example:

AverageTimeDataRetrievalInSec is showing as  AVERAGETIMEDATARETRIEVALINSEC in tool tip

Can we expect this will be fixed in upcoming releases? Appreciate if someone could help here.