Description

In java, selenium=4.2.0
ChromeDriver 139.0.7258.138
A few months ago we started using enable_bidi in chrome options to work around an issue with chrome where in selenium tests we could not capture a "are you sure you want to leave this page, you have unsaved changes" type alert.
A few months ago we faces with an issue with chrome where in selenium tests we could not capture a "are you sure you want to leave this page, you have unsaved changes" type alert.
As a workaround we added to ChromeOptions:
options.setCapability("webSocketUrl", true);
options.setUnhandledPromptBehaviour(UnexpectedAlertBehaviour.IGNORE);
And it fixed problem - we were able to see alerts in the UI and interact with them.

Today they no longer work (no capture the alert on leaving page, chrome never shows it)

Do you know reason for that and how it can be fixed?

Reproducible Code

ChromeOptions: 
options.setCapability("webSocketUrl", true);
options.setUnhandledPromptBehaviour(UnexpectedAlertBehaviour.IGNORE);

ℹ️ Last known working version: 4.2.0