WebEngine on Mac: Handling Shift + few other key is not correct

Shift + 1 on Mac OS keyboard should give the code 49 but the code gets detected as 0. However, pressing 1 without Shift gives the right code of 49.

Single quote. Gets detected as 0 again. But Shift + single quote (i.e. double quote) works fine and gives a code of 222.

0 and 9 (on Mac OS keyboard, possibly mapped to Keypad 0 and 9 on Microsoft Keyboards) give 48 and 57 respectively. But when we press Shift + 0 and Shift + 9, the numbers are reversed to 57 and 48 respectively.

To Reproduce use the following url on Chrome and QtWebEngine example like quicknanobrowser
:
Here is a sample URL: http://output.jsbin.com/awenaq/4
Please try it out in Chromium and then in Qt 5.5.1 and Qt 5.6.0 beta WebEngine examples