The DAP scripts inserts an iframe into the DOM, and that iframe is not accessible (which it doesn't have to be, since it's just for internal Google Tag Manager shenanigans). This causes some sort of apparent race condition where pa11y-ci throws an error on random pages during automated tests. Our workaround is to tell pa11y-ci to ignore iframe elements, which is okay because the site doesn't otherwise use iframes.
The DAP scripts inserts an
iframeinto the DOM, and thatiframeis not accessible (which it doesn't have to be, since it's just for internal Google Tag Manager shenanigans). This causes some sort of apparent race condition wherepa11y-cithrows an error on random pages during automated tests. Our workaround is to tellpa11y-cito ignoreiframeelements, which is okay because the site doesn't otherwise useiframes.