fix offset

cell/model/Workbook.js

@@ -3464,7 +3464,7 @@ Woorksheet.prototype.initPostOpen = function(handlers){
 					var fs = formulaShared[oFormulaExt.si];
 					if (fs && fs.fRef.contains(oCell.nCol, oCell.nRow)) {
 						if (fs.fVal.isParsed) {
-							var off = oCell.getOffset3(fs.fRef.c1, fs.fRef.r1);
+							var off = oCell.getOffset3(fs.fRef.c1 + 1, fs.fRef.r1 + 1);
 							fs.fVal.changeOffset(off);
 							oFormulaExt.v = fs.fVal.assemble();
 							off.offsetCol *= -1;