Martin Wedepohl

Disable WordPress Block Editor Fullscreen Mode, activated by default in WordPress 5.4.
Full credit to Jean-Baptiste Audras for his blog on how to do this. 
https://jeanbaptisteaudras.com/en/2020/03/disable-block-editor-default-fullscreen-mode-in-wordpress-5-4/
<h4>Active Contributors</h4>
<li><a href="https://profiles.wordpress.org/mwedepohl/" rel="nofollow ugc">Martin Wedepohl</a> (Development)</li>
<h3>Credits</h3>
<ul>
<li>Thanks to <a href="https://jeanbaptisteaudras.com/en/2020/03/disable-block-editor-default-fullscreen-mode-in-wordpress-5-4/" rel="nofollow ugc">Jean-Baptiste Audras for his blog on how to do this</a></li>
</ul>

Disable WordPress Block Editor Fullscreen Mode

Disable WordPress Block Editor Fullscreen Mode, activated by default in WordPress 5.4.

Chris Stephens

Simple Fullscreen Responsive Slider (or Simple Slider) is exactly that—an 
easy-to-use, lightweight, responsive slider plugin designed to add a fullscreen 
slide show to your front page. It supports multiple post thumbnails for slide 
backgrounds, has no branding, and you can edit all the CSS directly from the 
options page (or add it into your stylesheet and leave the custom CSS blank).
DEVELOPER-FRIENDLY
Or perhaps this section should read “client-friendly” as the plugin has no 
branding on the slide editor or options page. Our goal was to create a useful 
slider that other developers would feel comfortable with and enjoy using on 
client projects. Note: The plugin is intended for developers and changing its 
appearance requires customizing the default CSS.
CUSTOMIZABLE
The plugin provides either a fading or sliding transition (with customizable 
slide and effect durations), slide overlays, and allows developers to edit all 
CSS directly from the options screen. Alternatively, you can leave the custom 
CSS blank and add the required styles into your main stylesheet.
RESPONSIVE DESIGN
When combined with Chris Scott/VOCE Platform’s awesome Multiple Post Thumbnails 
plugin (see <a href="https://wordpress.org/plugins/multiple-post-thumbnails/" rel="ugc"> 
Multiple Post Thumbnails</a>), users can attach up to six separate images for a 
true responsive slider. The plugin will prompt for six different backgrounds and 
use those images according to the device used (instead of sending large images 
to mobile devices and/or low resolution images to retina and 4K displays). If 
you leave a slot open, it will search subsequently smaller sized images so, at 
a minimum, you must attach an image to the smallest slot.
The slider uses Patrick Kunka’s EasyFader jQuery plugin (visit 
https://github.com/patrickkunka/easyfader for more information).

Simple Fullscreen Responsive Slider

Simple Fullscreen Responsive Slider is an easy-to-use, lightweight, responsive, fullscreen slider that supports MultiPostThumbnails and custom CSS.

Disable WordPress Block Editor Fullscreen Mode vs Simple Fullscreen Responsive Slider