Reusable Block Won’t Convert to Regular Block

Hi,

My reusable blocks will no longer convert to regular blocks. Simply, when I click on “covert to regular blocks,” nothing happens. I have not installed any new plugins or made any other changes to my site, other than standard updates to WordPress and plugins. I am assuming that this issue is caused either by a plugin update or a WordPress update.

The particular block creating this error contains advanced columns, HTML, heading, paragraph, and a button.

Thanks in advance.