Scroll flickering on webview+

[maaljam]

Enviroment: CocoonJS: 1.0.0-0.5.0 webview+: 2.1.0 Cordova: 3.5.0-0.2.4

This is regarding the performance issue mentioned here.

Description: When scrolling through a list of divs or images, top and bottom of the scroll div start flickering. Without webview+ (using regular webview), scrolling is smooth and this problem does not occure.

Reproducing the issue/Test case:

• Create a cocoonjs ludeiTest project by following the steps in First steps with CocoonJS CLI Page.
• After adding the platform and webview+ plugin, replace index.html and index.css with these files index.html & index.css.
• Then run it on a physical device.

You should be able to see some flickering when scrolling through the green list.

Note: I discovered that if I remove div{overlflow:hidden} property, the issue gets solved and scrolling a list becomes smooth and without flickering. I did not want to raise the issue since I found this temporary solution but I thought this maybe needs to be brought to your attention anyway. Honestly I do not know the cause of this behaviour. if you think it is not related to cocoonjs chromium, please close the issue.

[agamemnus]

Yes I also noticed an issue like this. It seems that the scrollbar width, height, position, and visual appearance is corrupted.

[ludei]

Thank you for the heads up. We've found similar behavior in other demos, where the content seem to be rendered before the webview+ has all the data to compute it. We'll try to keep you informed once this error is solved.