Bug: Cannot edit multiple sliders

Wordpress v5.5
Gutenberg v8.8.0
Gutenslider v4.0.5

Adding and editing the first slider on a page works fine, but when you add a second Gutenslider you cannot create any slides.
Clicking “Media Library” displays the media browser, but selecting an image then closes the library.
CLicking “Add empty slide” just prints ‘false’ into the dev console (the result of M = function() {return “image” !== a && “video” !== a};console.log(M()); in wp-content/plugins/gutenslider/dist/gutenslider-blocks.build.js