Change Details

**Steps to replicate the issue** (include links if applicable): * Load [[ https://en.wikipedia.org/wiki/Earth | enwiki:Earth ]] with device emulation set to a mobile device * From the Network tab, use the "Override content" feature to create an override of the article * From the Performance tab, apply 4x CPU slowdown and Slow 4G network throttling (for example) * Record and reload, screenshot the graph for comparison * From the Source tab, edit the HTML source to move the script tag added by MobileFrontend to the end of the body tag (right before other bottom scripts) * Record and reload again, screenshot the graph for comparison **What happens?**: HTML parsing is delayed, waiting for the stylesheets to be loaded (which blocks the inline script). {F66755858} {F66755841} **What should have happened instead?**: HTML parsing goes along while the HTML content is downloading. {F66755857} {F66755842} **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Load [[ https://en.wikipedia.org/wiki/Earth | enwiki:Earth ]] with device emulation set to a mobile device * From the Performance tab, apply 4x CPU slowdown and Slow 4G network throttling (for example) * Record and reload, screenshot the graph for comparison * Load [[ https://44bb00ec83.catalyst.wmcloud.org/wiki/Earth | the same page from patchdemo ]] in another tab with the same settings * Record and reload, screenshot the graph for comparison **What happens?**: HTML parsing is delayed, waiting for the stylesheets to be loaded (which blocks the inline script). {F66755858} {F66756368} **What should have happened instead?**: HTML parsing goes along while the HTML content is downloading. {F66756374} {F66756376} **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):

**Steps to replicate the issue** (include links if applicable): * Load [[ https://en.wikipedia.org/wiki/Earth | enwiki:Earth ]] with device emulation set to a mobile device * From the Network tab, use the "Override content" feature to create an override of the article * From the Performance tab, apply 4x CPU slowdown and Slow 4G network throttling (for example) * Record and reload, screenshot the graph for comparison * From the Source tab, edit the HTML source to move the script tag added by MobileFrontend to the end of the body tag (right before other bottom scripts)Load [[ https://44bb00ec83.catalyst.wmcloud.org/wiki/Earth | the same page from patchdemo ]] in another tab with the same settings * Record and reload again, screenshot the graph for comparison **What happens?**: HTML parsing is delayed, waiting for the stylesheets to be loaded (which blocks the inline script). {F66755858} {F66755841}6368} **What should have happened instead?**: HTML parsing goes along while the HTML content is downloading. {F667558576374} {F66755842}6376} **Software version** (on `Special:Version` page; skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.):