Can't click() on some web page since 126.2.70

[tifish]

Is there an existing issue for this?

• I have searched both open/closed issues, no issue already exists.

CefSharp Version

126.2.180

Operating System

Windows 11

Architecture

x64

.Net Version

.Net 8.0

Implementation

WinForms

Reproduction Steps

1. Load web page: https://store.epicgames.com/en-US/download
2. Call EvaluateScriptAsync() with javascript: document.evaluate("//a[contains(@href, '.msi')]", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue.click()

Expected behavior

Should start downloading.

Actual behavior

The downloading won't start since 126.2.70, including 126.2.180 and 127.3.50.

Regression?

125.0.210 and below is OK.

Known Workarounds

No response

Does this problem also occur in the CEF Sample Application

Not Tested

Other information

No response

[amaitland]

Converting to discussion as this is very unlikely a bug in CefSharp.

Have you confirmed the javascript runs in DevTools console? Have you confirmed that it also runs in Chrome at the exact same version?

https://github.com/cefsharp/CefSharp/wiki/Trouble-Shooting#javascript-debugging

Every new version of Chromium brings a different V8 engine with different rules and restrictions.

2. Call EvaluateScriptAsync()

Did you check the response? What was the error?

If you aren't returning a value then switch to ExecuteScriptAsync which directly calls the underlying Chromium method.

[MyzLee]

I've got the same problems. Based on the initial ticket and the descriptions here, I have created an example. Version 125.0.210 is used here. If you switch to ChromeRuntime in the constructor of the MainWindow, only simple click events are working (switch to 'Terms of Service'). The 'complex' click events are no longer triggered and the LifeSpanHandler no longer works as expected. In addition, JS alerts then only work with activated DevTools. This behavior is still unchanged in the latest version 130.1.90.

WpfApp1.zip

[amaitland]

Converting to discussion as this is very unlikely a bug in CefSharp.

As I said this is unlikely a bug in CefSharp.

CEF has it's own issue tracker at https://github.com/chromiumembedded/cef/issues

In addition, JS alerts then only work with activated DevTools.

This is an upstream issue

[amaitland]

If the javascript triggers a window.open then you might want to try disabling the popup blocker that's now on by default.

#4940 (comment)

[MyzLee]

Thank you very much, that has solved my problems!