Description:
The native layout feature where a user can double-click empty board background space to instantly trigger the "Add List" prompt has completely stopped working.
Steps to Reproduce:
- Open any Trello board on a desktop browser.
- Double-click an empty background area or space between existing lists.
- Observe that no "Add List" prompt or input field appears.
Troubleshooting Already Attempted (Cross-Platform/Cross-Browser):
To isolate the bug, I have thoroughly tested and confirmed the issue persists across all of the following:
- Operating Systems: Tested on both Windows (Lenovo Thinkpad) and macOS (Macbook).
- Browsers: Confirmed broken on both Google Chrome and Microsoft Edge.
- Isolation Steps: Cleared site cache and local data, tested fully in Incognito/Private windows, and completely disabled all browser extensions on Chrome on Macbook.
Because it fails across completely separate machines, OS environments, profiles, and browsers, this appears to be a recent platform-side regression bug. Please escalate to the development team to restore this critical power-user feature.
