Created attachment 63783 [details] sample file with error in formula Hi The attached spreadsheet shows an error not detected in formula calculation within the spreadsheet, and depends on the location of the formula., On cell B6 =SUM(C2:G2)-C3:G3 contains a syntax error that is perfectly signaled. THE SAME formula in cell C6 does not signal an error, results in 450 which is SUM(C2:G2) - C3
It's not a bug, it's a feature ;-) If you use a range reference with an operator that expects a scalar value a position dependent single reference (intersection) is calculated. For your example the ...-C3:G3 in column C results in C3, in column D it would result in D3, but in column B there is no intersection of column B and the range C3:G3, hence the error.