As far as I can see, this line causes the problem:
------------------ src/sdk/wxscintilla/src/ScintillaWX.cpp -------------------
index 41257d5..e8c49b6 100644
@@ -821,7 +821,7 @@ sptr_t ScintillaWX::WndProc(unsigned int iMessage, uptr_t wParam, sptr_t lParam)
Point pt = LocationFromPosition(wParam);
char* defn = reinterpret_cast<char *>(lParam);
AutoCompleteCancel();
- pt.y += vs.lineHeight;
+ //pt.y += vs.lineHeight;
/* C::B begin */
/* This fix will allow you to actually modify the calltip font (it
* was hardcoded to STYLE_DEFAULT instead of allowing user to