>>> My Info: Win7_64, Nightly 49, 32bit, ID 20160526082509 Term "The fields" below refers to "fields 'Name' and 'Location' at the bottom of Library window". >>> STR_1: (wrong info) 1. Open http://example.org , close that tab 2. Open https://ya.ru/ , close that tab 3. Open History (Ctrl+Shift+H) 4. Type "example" in filter field AR: After Step 3 - Selected item is https://ya.ru/. The fields display info about https://ya.ru After Step 4 - Selected item is https://ya.ru/. The fields display info about http://example.org ER: Either X or Y. X is better X) After Step 4 - Input fields at the bottom of Library window display info about http://example.org Y) After Step 4 - No item should be selected. The fields should display nothing STR_2: (wrong selected item) 2. Open http://example.org/1 , close that tab 1. Open http://example.org/2 , close that tab 3. Open https://ya.ru/ , close that tab 4. Open History (Ctrl+Shift+H) 5. Select item "http://example.org/1" (click on that item) 6. Type "example" in filter field AR: Step 4 - Selected item is https://ya.ru/. The fields display info about https://ya.ru Step 5 - Selected item is http://example.org/1 . The fields display info about http://example.org/1 Step 6 - Selected item is http://example.org/2 . The fields display info about http://example.org/1 ER: Step 6 - Selected item is http://example.org/1 . The fields display info about http://example.org/1 Note: 1) There're also scenarios when bookmarks folder (left frame in the Library) is deleted/restored in normal FF window (for example via bookmarks panel) while it was selected in Library window. In that case the fields don't update, just as in STR_1, STR_2. Steps-wanted; I don't have time for that. 2) This happens if the frame where I selected item is not focused (if it's focused, then the fields update correctly). Therefore this bug can be written as: Input fields should update to be in sync with selected item in the last focused frame in Library. 3) The bug happens when the frame with selected item is not focused (e.g. filter field is focused). But if the fields were the last focused element before selected item (in that frame) has changed, then solution from Note 2 should NOT be applied, because user may want to continue working with text displayed in the fields. Therefore solution for this bug is not as easy as just apply solution from Note 2. Note 3 also indicates that no work was done to determine "good"/useful behavior. This is the purpose of this bug: to implement a "good"/useful behavior. So far it's unconfirmed.