fix(docs): Add link to how to enable DEV_SSR for fixing inconsistent …

…css styles between dev/prod (#30746)

docs/docs/how-to/local-development/troubleshooting-common-errors.md

@@ -89,6 +89,8 @@ The following errors are related to styles in your site, using CSS, preprocessor
 
 ### Inconsistent CSS styles between develop and build using styled-components or emotion
 
+_NOTE: We're in process of adding SSR support to the develop server. To use it now, enable the `DEV_SSR` flag in your gatsby-config.js — https://github.com/gatsbyjs/gatsby/discussions/28138_
+
 A common problem that trips up users that install and begin to use styled-components or emotion is not including the related plugin in the config. Because `gatsby develop` doesn't run server-side rendering, the build may look different if the plugin is not included to tell Gatsby to server-side render the styles for the CSS-in-JS solution being used.
 
 Adding `gatsby-plugin-styled-components` (in the case of styled-components) or `gatsby-plugin-emotion` (in the case of emotion) to `gatsby-config.js` will inform Gatsby to process the styles server-side so they display correctly in the final build.