When viewing the properties for a bookmark or livemark, an expander button appears to allow you to view a minimal or complete set or properties. This button has an access key, but the key only works once.
Created attachment 522845 [details] [diff] [review]
The label expects the access key to be set on the controlled element, so when the toggle code in bookmarksManager.js sets the access key, there are now two access keys, one on the label, one on the button. If the two keys are different, then both keys work to uncollapse the pane! However if the two keys are the same, or if the pane is collapsed again, then the accelerator code detects a conflict and refuses to activate the button. The solution is to set the original access key on the button, where the label can overwrite it.
Pushed changeset 9ab5ebcff8fa to comm-central.