I experience the same white screen issue. I add the Glossary gutenberg block. I can add items and edit them. Publish the page. It renders nicely on the front end.
However, once I edit the page with another block editor (Flatsome Theme – UX Builder), to create a banner above glossary, then the white screen issue appears. I cannot edit the page in the regular editor anymore. There are no problems displayed in the log. My current WP version: 6.2.2
Would be nice to get this plugin compatible with the latest version of WP, as this is so far the simplest Glossary plugin I have found. All others are bloated and too complicated.