You could load the dashboard widget into its own document in an iframe if the problem is bootstrap css messing up other parts of the page. This answer has example code for the iframe widget part of it: Embed iframe or html page into dashboard widget You just have to pass the iframe a url … Read more
Theme Widget Area Defaults
Can’t edit the widgets sidebar or footer
Add custom settings to widget areas
Here’s why did you get an undefined The function itself was defined, but the function call (wp.blocks.getBlockVariations( ‘core/embed’ )) returned an undefined because by the time that you called the function, the block/Gutenberg editor had not yet been initialized. Hence, undefined was returned instead of an array of block variations, because core block types like … Read more
As of 6.1.1, I have discovered you can achieve this by disabling the option to open each social link in a new tab. Imagine this will change in a future WP update.
Widgets not updating despite cache clearing
Because of the way templates are rendered in WordPress it won’t be possible to know if a page has a sidebar until after that sidebar has been rendered. This is because code in templates can’t ‘know’ what code exists later in rendering sequence. What I would recommend is determining what the conditions are which your … Read more
is it possible to create custom widgets page in admin?
SVG Icon Code Support in WordPress Custom Html Widget? Not Working