Created attachment 51292 [details] ods spreadsheet, works in 3.3 fails in 3.4 In LO 3.3 and earlier... if a cell J1 contained a blank "" then was used in a sum (I1+J1) the result would be I1 i.e. the blank was treated as a zero in 3.4.3 the result is #Value! see attached example
*** This bug has been marked as a duplicate of bug 37860 ***