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I am running a test that tests a specific property (ag-grid). 
**Chrome and Electron work fine. **
The same test **fails on Firefox**. 

cy.get('.ag-cell-value')
                        .find('[aria-checked]')
                        .invoke('prop', 'ariaChecked')
                        .should('eq', value);

The error is:
assert expected undefined to equal **true**

So i guess the command-  .invoke('prop', 'ariaChecked') bring undefined instead of the value

Any idea why?