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7b907ec50a
Why this change? The `Table Builder when editing a table when cancelling table creation should close the modal if there are no changes made` system test in `spec/system/table_builder_spec.rb` was flaky. It turns out that when the modal is opened, we have to load some JS/CSS files. While that is happening, the modal is actually not functional and clicking stuff in the footer can actually result in an error. In this case, the `interceptCloseModal` calls the private `_hasChanges` function which then calls `this.spreadsheet.getHeaders()`. When stuff is still loading, `this.spreadsheet` has not been set. As a result we get the following error: ``` Cannot read properties of null (reading 'getHeaders') ``` What does this change do? Why stuff is loading, we will now hide the footer in the modal.