[Reg 6.8.3 -> 6.9.0] WebEngine rendering issue with certain components.

WebEngine rendering issue of certain components when using the Quick Nano Browser example project.

To reproduce the issue:

• Run the Quick Nano Browser example project.
• Navigate to https://nid.naver.com/nidlogin.login.
• Check "stay signed in" in the checkbox.
• Turn on the 'IP Security' toggle button.

Expected behavior, which is the case for the 6.8.3 simple browser or Chrome browser:

"Stay signed in" should be green and the 'IP Security' toggle button should be on and green.

Actual behavior: the "stay signed in" checkbox and 'IP Security' toggle button are still gray.