Legacy Theme Preview Removed in 4.3

This releaseRelease A release is the distribution of the final version of an application. A software release may be either public or private and generally constitutes the initial or new generation of a new or upgraded application. A release is preceded by the distribution of alpha and then beta versions of the software. we removed the old code for the Legacy Theme Preview, which hasn’t been maintained since the introduction of the customizerCustomizer Tool built into WordPress core that hooks into most modern themes. You can use it to preview and modify many of your site’s appearance settings. in WordPress 3.5. Recently, we noticed that the theme preview no longer works when using a static front pageStatic Front Page A WordPress website can have a dynamic blog-like front page, or a “static front page” which is used to show customized content. Typically this is the first page you see when you visit a site url, like wordpress.org for example.. We kept the old theme preview for no-JSJS JavaScript, a web scripting language typically executed in the browser. Often used for advanced user interfaces and behaviors. and some browsers that were less capable. But since browsers are doing a better job today we don’t need to continue fixing/shipping this legacy code. It’s removed in [33492].

#4-3, #dev-notes, #themes