CefSettings: RemoteDebuggingPort and/or CefCommandLineArgs stopped working in 126

[SiMoStro]

Is there an existing issue for this?

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

CefSharp Version

126.2.160

Operating System

Windows 11

Architecture

x64

.Net Version

4.7.2

Implementation

WinForms

Reproduction Steps

We've successfully used the Chromium devtools/debugging feature in all latest versions, initializing CefSettings in this way:

CefSettings settings = new CefSettings
{
    LogSeverity = LogSeverity.Default,
};
settings.RemoteDebuggingPort = 3333;
settings.CefCommandLineArgs.Add("--remote-allow-origins", "*");

starting from version 126.2.70 this has stopped working.
We are currently testing 126.2.180 but the problem persists.

Expected behavior

The Chromium debug console should be available at the configured port:

Actual behavior

The page at the configured port does not generate errors but shows nothing:

Regression?

Yes, this used to work in previus versions.
Note that this problem has been already notified in this thread:

chromiumembedded/cef#3740

but has been closed as "WontFix", but this is clearly a regression.

Known Workarounds

No workaround

Does this problem also occur in the CEF Sample Application

Not Tested

Other information

Other users have already notified the problem:

chromiumembedded/cef#3740