Issue Summary

Making the second row a header in combination with the first row, the table header does not work as expected, meaning in a normal scenario the header freezes if the table is scrolling down the page but in this scenario, the table header does not freeze.

This is reproducible on Data Center: (yes)

Steps to Reproduce

1. Create a Page and inset a long table on the page ( example 16 x 16 )
2. As the first row is header by default, make entries on each cell for 3 to 4 down the rows ( including the header ) and publish the page.
3. Now try to scroll the page down to see the rest of the table and you will see that the header of the table ( 1st row ) is frozen which is fine
4. Now edit the page again
5. Select the 2nd row and make that heading row as well ( screenshot attached ) meaning now, we have the 1st row and the 2nd row both as headers of the table.
6. Publish the page
7. Now, scroll the table to see it and you will see that the header is now not freeze like before which is the problem

Expected Results

1. Both headers should freeze as normally happens with a single row for the header

Actual Results

1. The header does not freeze

Workaround

Currently, there is no known workaround for this behaviour. A workaround will be added here when available