OnFileDialog Upload No Response

[kissqy]

Describe the bug
No response when uploading files using OnFileDialog.

To Reproduce
cef can upload files normally using OnFileDialog when in remote desktop, but there is no response when using OnFileDialog after closing the remote desktop.

Versions (please complete the following information):

• OS: [Windows 11]
• CEF Version: [>=126.0.6478.17]

Additional context
Versions before 126 do not have this problem, but versions 126 and later have this problem.

[magreenblatt]

What do you mean by “no response”? At what point in the upload process are you closing the remote desktop? What do you see when you return to the remote desktop?

[kissqy]

I have an automation program on a remote computer. The program calls the OnFileDialog interface to directly pass in the file address for automatic uploading.
Originally, versions before 126 could upload normally (regardless of whether the remote desktop is open or not). Versions 126 and later can upload normally when the remote desktop is open, but after closing the remote desktop, the automatic uploading stops.
All conditions are the same, only the difference is whether the remote desktop is open or closed.

[magreenblatt]

Running with verbose logging enabled, do you see anything that suggests what the problem might be? https://www.chromium.org/for-testers/enable-logging/

[kissqy]

I looked at the log in detail and found no relevant errors or warnings
https://github.com/chromiumembedded/cef/commits/master/include/cef_dialog_handler.h
The problem occurred after the update on May 31st

[kissqy]

After I cleared the log, I used the program to trigger the upload task. There was no update in the log and no errors or warnings were prompted.

[kissqy]

When the remote desktop is closed, something may have happened that caused OnFileDialog to fail to upload correctly. The program can trigger the opening of the file selection window normally, but it cannot upload by passing in the file address mode.