[Bug]: offscreen rendering doesn't render clicked INPUT SELECT dropdown, or any popups #34095
Description
Preflight Checklist
- I have read the Contributing Guidelines for this project.
- I agree to follow the Code of Conduct that this project adheres to.
- I have searched the issue tracker for a bug report that matches the one I want to file, without success.
Electron Version
18.1.0
What operating system are you using?
Ubuntu
Operating System Version
Ubuntu Jammy
What arch are you using?
x64
Last Known Working Electron version
No response
Expected Behavior
I'm expecting INPUT SELECT dropdowns and popup windows to be composited in the offscreen render of the originating window.
Actual Behavior
INPUT SELECTs are not composited in the offscreen render of the main BrowserWindow. For popup windows, adding a paint event listener on the new BrowserWindow emitted to 'browser-window-created' doesn't generate OSR paint events either.
Testcase Gist URL
https://gist.github.com/gtalusan/c0ad56685aeb3b2c1108fbccf6b451b4
Additional Information
No response