Notepad++ should work now.

main.cpp

@@ -512,7 +512,10 @@ void present_text_event(const WineAccessTextEvent &event) {
   if (owner == nullptr || owner != GetAncestor(GetForegroundWindow(), GA_ROOT) ||
       !GetGUIThreadInfo(GetWindowThreadProcessId(owner, nullptr), &info) || info.hwndFocus != window)
     return;
-  if ((GetWindowLongPtrW(window, GWL_STYLE) & ES_PASSWORD) &&
+  const bool scintilla = event.flags & WINE_ACCESS_TEXT_SCINTILLA;
+  const bool readOnly = scintilla ? (event.flags & WINE_ACCESS_TEXT_READONLY) != 0
+                                : (GetWindowLongPtrW(window, GWL_STYLE) & ES_READONLY) != 0;
+  if (!scintilla && (GetWindowLongPtrW(window, GWL_STYLE) & ES_PASSWORD) &&
       event.kind != WINE_ACCESS_TEXT_PASSWORD)
     return;
   std::string text = to_utf8(event.text);
@@ -527,7 +530,7 @@ void present_text_event(const WineAccessTextEvent &event) {
     wchar_t label[256] = {};
     find_control_label(window, label, std::size(label));
     control.name = to_utf8(label);
-    control.role = GetWindowLongPtrW(window, GWL_STYLE) & ES_READONLY ? "read only edit" : "edit";
+    control.role = readOnly ? "read only edit" : "edit";
     control.value = text.empty() ? "blank" : text;
   } else {
     if (text == " ") text = "space";
@@ -552,12 +555,13 @@ void present_text_event(const WineAccessTextEvent &event) {
   // Re-establish focus before its first action without re-reading the document.
   if (!focus && lastTextControl != window) {
     ControlDescription focused;
-    focused.role = GetWindowLongPtrW(window, GWL_STYLE) & ES_READONLY ? "read only edit" : "edit";
+    focused.role = readOnly ? "read only edit" : "edit";
     if (!present_accessible_event(source, "focus", focused, title)) return;
   }
   if (event.kind != WINE_ACCESS_TEXT_PASSWORD)
     control.states = "start=" + std::to_string(event.start) + " end=" +
                      std::to_string(event.end) + " kind=" + std::to_string(event.kind);
+  if (scintilla) control.states += " offset_unit=byte";
   // Text commands are ordered actions, not transient focus notifications.
   if (present_accessible_event(source, focus ? "focus" : "text", control, title))
     lastTextControl = window;