WP 5.4 Block Editor width

[mbeerli]

When in a post (edit mode) the title is quite wide, the below blocks are very narrow and I do not see any option to widen all Blocks. This must be a bug.

[mbeerli]

block width in edit mode

[Otto42]

It is not a bug, the default width of the editor space is 580 pixels. If the space needs to be larger because the theme provides a wider area on the page, then the theme itself should style the editor to be wider using editor-styles.

​https://developer.wordpress.org/block-editor/developers/themes/theme-support/

Changing the width of the editor is specifically mentioned:

​https://developer.wordpress.org/block-editor/developers/themes/theme-support/#changing-the-width-of-the-editor

[sabernhardt]

The default content block width on larger screens is slightly wider at 610px now, but the title block will not match that for every theme. Although I do see your theme (Graphene) matches the title and content blocks at 750 pixels wide.

Closing as not-a-bug.