KB-1923 Repeated "You Are Already Editing" warnings in Interface and Rule Designers
Symptoms
Designers repeatedly see a warning about editing an interface or rule in another browser window, even if there is no other browser window open with the interface or rule:
You Are Already Editing
You are editing this interface in another browser window.
View the interface in read-only mode to avoid overwriting any of your unsaved changes.
Cause
This error occurs due to an interaction of Appian front-end code with Google Chrome when the “unload” event is disabled.
Action
- Navigate to
chrome://flags - Search for unload
- Disable the
Deprecate the unload event
Workaround
Utilize an alternative compatible web browser, such as Mozilla Firefox.
Affected Versions
This article applies to all versions of Appian 25.4 and later with Google Chrome as a browser.
Last Reviewed: August 2026