Value not being written to database correctly

Do more tests with other values…test 3 values for main input while keeping other at 14 and see if all get added 14…then test and change 14 to 15 and test 3 values in main input again to see if all 3 tests add 15. If yes, @Jici is probably correct you have a hidden or forgotten 3rd input you’ve selected as value to save which sums the 2 visible inputs, or you have some condition on main input that changes value to be summed, but most likely is nothing wrong with bubble