Grid container not sized properly when there are exactly 8 rows

[coquagli]

Steps to Reproduce:

1. Open a .sql file
2. Write a query that will return 2 resultsets: the first that contains exactly 8 rows, the second that contains more than 8 rows. E.g.:

select TOP(8) * from sys.databases
select * from sys.tables

3. Run the query
4. Resize the window to make it shorter

Actual:

Expected: