Using ATC w/ TinyMCE Advanced + Gutenberg classic blocks

I use TinyMCE Advanced to manage which controls appear in which toolbars.

But I also use this plugin to control which block_formats appear in the formatselect control and which style_formats appear in the styleselect control.

This works great in core TinyMCE and classic editor.

However, when editing a classic block in Gutenberg the style_formats I’ve specified in ATC do not show in the styleselect control. The block_formats still correctly show in the formatselect control.

And this happens for classic blocks whether the post was created before Gutenberg was installed or because the classic block was intentionally inserted via Gutenberg.

I’m not sure whether the problem lies with this plugin, with Gutenberg or with TinyMCE Advanced.

Let me know if there is any other info you need.