render a redundant table row after inserting a row

Steps to Reproduce

1. run the attached example
2. enter a number, 1, at exchange!D7
3. click buy
4. back to exchange sheet, do step 1 and 2

Current Result

there are 3 rows in the table

Expected Result

there are 2 rows in the table

Debug Information

if I resize the height of the last row, its content disappears. Please see the gif