iExpense - Amount duplication while selecting itemize option in expense report

Dear Experts,

While creating expense report and clicking on itemize option it is duplicating amount, otherwise if itemize option is not clicked it is processing expense normally.

checked by following queries.

1. select * from ap_exp_report_dists_all where report_header_id =  '18063'

2. select * from ap_expense_report_lines_all where report_header_id = '18063'   ( this query creating 2 lines for expense report with itemize option otherwise 1 lines is created).

3.select * from ap_expense_report_headers_all where report_header_id = '18063'

please advise is there any workaround to avoid duplication issue while using itemize option.