Buttons flashing with question mark and non responsive.

@Apetrou I think you're missing some files (those white blobs seems to be huge toolbar icons, so the font-size seems to be changed). Try to start from the file used for the demo https://github.com/artf/grapesjs/blob/gh-pages/demo-newsletter-editor.html

I also have this problem.

I am trying to include it in a CakePHP application. If I run my same gjs includes and scripts on a simple HTML file from my desktop, it works as expected - meaning it is not a missing include. However, including that gjs setup in the application I need it to causes it to look identical to the image above.

Okay. After lots of trial and error, the issue is that I am already including font-awesome in my header.

<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/js/all.min.js" integrity="sha512-RXf+QSDCUQs5uwRKaDoXt55jygZZm2V++WUZduaU/Ui/9EGp3f/2KZVahFZBKGH0s774sd3HmrhUy+SgOFQLVQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

Unfortunately, I cannot remove font-awesome from there as I use it in many places.