Terrible flashing problem on certain web pages

[neil-119]

• What version of the product are you using?
  • v49.0.0
• What architecture x86 or x64?
  • x86
• On what operating system?
  • Win10
• Are you using WinForms, WPF or OffScreen? WPF
• What steps will reproduce the problem? Just navigate to any website using Zopim. (e.g. zopim.com)
• What is the expected output? What do you see instead? Expected: no flashing Occurring: Terrible white flashes. The page is still navigable.
• Please provide any additional information below. None
  • Does the cef log provide any relevant information? (By default there should be a debug.log file in your bin directory) Nope
  • Any other background information that's relevant? Are you doing something out of the ordinary? 3rd party controls? Nope
• Does this problem also occur in the Cef TestApp from http://cefbuilds.com? No.

[amaitland]

Here's my code.

No zip files please (as per https://github.com/cefsharp/CefSharp/blob/master/CONTRIBUTING.md#help-us-help-you)

Does the cef log provide any relevant information? (By default there should be a debug.log file in your bin directory) Nope

I expect if you find logging enabled you'll have some graphics related problems.

Note There is a known graphics issue with WPF and OffScreen versions, see #1634 for details, also see #1666

As per the release notes there are known graphics issues with the WPF version.

https://github.com/cefsharp/CefSharp/releases/tag/v49.0.0

[neil-119]

Okay, thank you. I searched and didn't see this particular issue posted, as it only happens on certain pages doing some kind of polling (Zopim was an example) and only on the WPF version, so I thought I'd post the issue to let you guys know.

For other people having this issue, a workaround is to host the WinForms version of the project in WPF through the WinFormsIntegration assembly.

[fredisko]

Hello I have same problem with this version. I downgrade version to 47.0.3 and it is working wel