Font Issue in case of serif and sans-serif

[kanika gupta]

Hi
I am working on a browser based on Qt5.3, when a content with sans-serif and serif font is accessed, the display is same.
If I debug Qt code, I get that the font family used for it is "Palatino" for both the fonts.
In Qt4.7, this issue is not occurring. In this, Sans-serif uses "Arial" font and serif uses "Times New Roman" which is the correct behaviour.
What could be the issue for this behaviour in Qt5.3?

[kanika gupta]

One more detail addition to the above query,
The system fonts used are as below:
Palatino
Helvetica
Geneva
New York
Monaco
Times
Courier
Arial
HYGoThic-Medium
Helvetica
Helvetica Condensed
HGPGothicB
HGPMinchoL
MHei Bold CP950
Monotype Hei Bold GB 18030
NimbusSansGlobal
Times New Roman
TT Hira Sans GB P W3
TT Hira Sans Rd JP P W4
TT Hira Sans TC P W3
Univers OTS