Formatting toolbar of table block ignores custom formatting buttons

Thanks for a great plugin! One minor issue that i’ve encountered.

I use registerFormatType (following these official steps) to add a simple ‘button’-like inline format to any rich text toolbar in Gutenberg editor.

This works perfectly with core blocks, however, the Table block of Getwid only seems to have predefined formats in its inline text formatting toolbar on: Bold, Italic, Link, Inline image, Strikethrough, Text color. The custom format button that appears for other blocks doesn’t get added to the table’s toolbar.

My WP is 5.5, plugin version is 1.6.7.

Any ideas how that could be resolved?
Thanks a lot!