TinyMCE toolbar selects not appearing in custom toolbar - tinymce

Question

I am installing a new TinyMCE instance into a textarea. I am loading it using their cdn, and have registered an API Code, and registed my website on the dashboard. It works and loads tinyMCE correctly until I try to modify the toolbars to add the select options.
To be more clear, when I load with no configuration, I see a "Paragraph" Dropdown with the various Headings, Blocks etc. However when I try to load examples, or customize my own, I do not see those options.
Using this configuration:
tinymce.init({
selector: '#content',
plugins: 'fullscreen, link, image, table, code, lists, emoticons, advlist, charmap, searchreplace, codesample ',
toolbar: [
'undo redo | forecolor backcolor | formatting | align | numlist bullist | blockquote | link | image | table | code | template | symbol | searchreplace ',
'undo redo | sizeselect | styleselect | formatselect | fontselect | fontsizeselect | fullscreen '
],
toolbar_groups: {
formatting: {
icon: 'bold',
tooltip: 'Formatting',
items: 'bold italic underline | superscript subscript | codesample'
},
align: {
icon: 'align-left',
tooltip: 'Alignment',
items: 'alignleft aligncenter alignright alignjustify'
},
symbol: {
icon: 'insert-character',
tooltip: 'Symbol',
items: 'emoticons | charmap'
}
}
});
On the second toolbar, I only see icons for undo, redo and fullscreen. None of the selects render.

Answer 1

The configuration should work fine if you're using TinyMCE 5. However, if you're using TinyMCE 6 then the toolbar buttons were renamed: https://www.tiny.cloud/docs/tinymce/6/migration-from-5x/#things-we-renamed. So in that case, you'd need to use something like this instead: 'undo redo | sizeselect | styles | blocks | fontfamily | fontsize | fullscreen'.