Also use same path for creating highlight

src/calibre/gui2/viewer/highlights.py

@@ -82,7 +82,6 @@ class Highlights(QListWidget):
 class HighlightsPanel(QWidget):
 
     jump_to_cfi = pyqtSignal(object)
-    add_highlight = pyqtSignal()
     request_highlight_action = pyqtSignal(object, object)
 
     def __init__(self, parent=None):
@@ -145,3 +144,6 @@ class HighlightsPanel(QWidget):
         if h is None:
             return self.no_selected_highlight()
         self.request_highlight_action.emit(h['uuid'], 'delete')
+
+    def add_highlight(self):
+        self.request_highlight_action.emit(None, 'create')

src/calibre/gui2/viewer/ui.py

@@ -155,7 +155,6 @@ class EbookViewer(MainWindow):
         self.bookmarks_dock.setWidget(w)
 
         self.highlights_widget = w = HighlightsPanel(self)
-        w.add_highlight.connect(self.add_highlight)
         self.highlights_dock.setWidget(w)
 
         self.web_view = WebView(self)
@@ -339,9 +338,6 @@ class EbookViewer(MainWindow):
     def bookmark_activated(self, cfi):
         self.web_view.goto_cfi(cfi)
 
-    def add_highlight(self):
-        self.web_view.trigger_shortcut('create_annotation')
-
     def view_image(self, name):
         path = get_path_for_name(name)
         if path:

src/pyj/read_book/view.pyj

@@ -1191,6 +1191,9 @@ class View:
             self.show_name(sr.file_name, initial_position={'type':'search_result', 'search_result':sr, 'replace_history':True})
 
     def highlight_action(self, uuid, which):
+        if which is 'create':
+            self.iframe_wrapper.send_message('create_annotation')
+            return
         spine = self.book.manifest.spine
         spine_index = self.annotations_manager.spine_index_for_highlight(uuid, spine)
         if spine_index < 0 or spine_index >= spine.length: