...

src/calibre/gui2/library/models.py

@@ -823,6 +823,8 @@ class OnDeviceSearch(SearchQueryParser): # {{{
                     if accessor(row) is None:
                         matches.add(index)
                     continue
+                if locvalue == 'inlibrary':
+                    continue    # this is bool, so can't match below
                 try:
                     ### Can't separate authors because comma is used for name sep and author sep
                     ### Exact match might not get what you want. For that reason, turn author

src/calibre/gui2/search_box.py

@@ -139,10 +139,8 @@ class SearchBox2(QComboBox):
 
     def key_pressed(self, event):
         self.normalize_state()
-        if not self.as_you_type:
         if event.key() in (Qt.Key_Return, Qt.Key_Enter):
             self.do_search()
-        else:
         self.timer = self.startTimer(self.__class__.INTERVAL)
 
     def mouse_released(self, event):