Insert by read file can't work well

1. Start cm
2. Add connection to database
3. create a table using "create table a (sid char(1));"
4. Create xlsx file, and insert 5 data into xlsx file, such as, 1,2,3,4,5
4. Right click table, and select 'Execute prepared SQL' - > Insert by read file...
5. select xlsx file to insert data into table

only one data can be inserted. and no error popup

please use attached xlsx to reproduce