Change Details

**Steps to replicate the issue** (include links if applicable): * Visit https://pl.wikipedia.org/wiki/Wikipedia:Strona_g%C5%82%C3%B3wna in an incognito window. * Inspect network tab **What happens?**: * 36.2kb of render blocking CSS is loaded for anonymous page views (compared to 19.3kb on English Wikipedia) **What should have happened instead?**: The bundle should be more optimized. Render blocking CSS does contribute to higher first paint times, especially on poor connections and older devides. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): The main reasons for the adding CSS load seem to be a combination of the following: * the installation of #mediawiki-extensions-flaggedrevs and * The installation of ReferenceTooltips for anonymous users by default which loads jquery.ui and oojs-ui-core (perhaps this could be revisited in light of T282999) * The addition of oojs-ui-core.icons, oojs-ui.styles and oojs-ui.styles.indicator to render blocking CSS (not sure what is adding this but it does not appear to be gadget related and seems related to [[ https://codesearch.wmcloud.org/deployed/?q=enableOOUI&files=&excludeFiles=&repos=#mediawiki/extensions/Wikistories | something on the page ]] calling OutputPage::enableOOUI)

**Steps to replicate the issue** (include links if applicable): * Visit https://pl.wikipedia.org/wiki/Wikipedia:Strona_g%C5%82%C3%B3wna in an incognito window. * Inspect network tab **What happens?**: * 36.2kb of render blocking CSS is loaded for anonymous page views (compared to 19.3kb on English Wikipedia) **What should have happened instead?**: The bundle should be more optimized. Render blocking CSS does contribute to higher first paint times, especially on poor connections and older devides. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): The main reasons for the adding CSS load seem to be a combination of the following: * the installation of #mediawiki-extensions-flaggedrevs and * The installation of ReferenceTooltips for anonymous users by default which loads jquery.ui and oojs-ui-core (perhaps this could be revisited in light of T282999) * The addition of oojs-ui-core.icons, oojs-ui.styles and oojs-ui.styles.indicator to render blocking CSS (not sure what is adding this but it does not appear to be gadget related and seems related to [[ https://codesearch.wmcloud.org/deployed/?q=enableOOUI&files=&excludeFiles=&repos= | something on the page ]] calling OutputPage::enableOOUI)

**Steps to replicate the issue** (include links if applicable): * Visit https://pl.wikipedia.org/wiki/Wikipedia:Strona_g%C5%82%C3%B3wna in an incognito window. * Inspect network tab **What happens?**: * 36.2kb of render blocking CSS is loaded for anonymous page views (compared to 19.3kb on English Wikipedia) **What should have happened instead?**: The bundle should be more optimized. Render blocking CSS does contribute to higher first paint times, especially on poor connections and older devides. **Software version** (skip for WMF-hosted wikis like Wikipedia): **Other information** (browser name/version, screenshots, etc.): The main reasons for the adding CSS load seem to be a combination of the following: * the installation of #mediawiki-extensions-flaggedrevs and * The installation of ReferenceTooltips for anonymous users by default which loads jquery.ui and oojs-ui-core (perhaps this could be revisited in light of T282999) * The addition of oojs-ui-core.icons, oojs-ui.styles and oojs-ui.styles.indicator to render blocking CSS (not sure what is adding this but it does not appear to be gadget related and seems related to [[ https://codesearch.wmcloud.org/deployed/?q=enableOOUI&files=&excludeFiles=&repos=#mediawiki/extensions/Wikistories | something on the page ]] calling OutputPage::enableOOUI)