1) It is completely CRAZY to plan for it to match the theme when we ALL design responsive websites that do not have a fixed with about 99% of the time. To be usefully it would be responsive and just fill the available space.
Which is entirely within the realm of the theme to do.
Look, it’s not difficult to make the thing go full width. Not in the slightest. If a theme wants to do that, then here’s the bloody code to do it:
First, look how Twenty Seventeen adds support for block styles:
function twentyseventeen_block_editor_styles() {
// Block styles.
wp_enqueue_style( 'twentyseventeen-block-editor-style', get_theme_file_uri( '/assets/css/editor-blocks.css' ) );
// Add custom fonts.
wp_enqueue_style( 'twentyseventeen-fonts', twentyseventeen_fonts_url(), array(), null );
}
add_action( 'enqueue_block_editor_assets', 'twentyseventeen_block_editor_styles' );
All the styles and fonts and such are defined there, to let the editor match the look of the site.
Over in that editor-blocks.css file, scroll down until you find this:
.wp-block {
max-width: 674px; /* Based on one-column post width; 644px + 30px to account for padding. */
}
Change the max-width to none and voila. Now your editor is full width on the page. Minus a bit of padding.
The code isn’t difficult. The theme still has to make that decision though. The theme should be styling it to match what the actual site looks like. In Twenty Seventeen’s case, it’s by default setting the width to try to match the look of the page with one column and no sidebar. I kinda think Twenty Seventeen’s math is a bit off, but my point is that the theme is indeed setting that width.
All the default themes were adjusted to have block styles. Themes should follow from those examples.
2) It is NOT matching the width of ANY of my themes. I have checked it out on about 10 websites yesterday that we upgraded to 5.2. We immediately installed the classic editor.
If your themes have not been updated to have block styles, then I would not expect them to.
3) This issue is probably why there are over 1 Million installs of the classic editor plugin. People hate this thing.
Actually, no, the active installs of the Classic Editor largely overlaps with active installs of existing page builders that rely on it.
