DOC-3243: Toolbar button was not initialized when used with the quickbars plugin#4020

kemister85 merged 2 commits intofeature/8.4.0/DOC-3243tinymce/tinymce-docs:feature/8.4.0/DOC-3243from

feature/8.4.0/DOC-3243_TINY-13731tinymce/tinymce-docs:feature/8.4.0/DOC-3243_TINY-13731Copy head branch name to clipboard