3D FlipBook - Gutenberg “classic” blocks break when the 3D flipbook plugin is enabled. While the flipbook itself works, we can’t use

Gutenberg “classic” blocks break when the 3D flipbook plugin is enabled. While the flipbook itself works, we can’t use it without those blocks working.

I’ve opened a support post for this on wordpress.org at https://wordpress.org/support/topic/classic-blocks-broken-in-5-1/

Thanks in advance. We ran into this shortly after purchasing the pro version, and look forward to its resolution.