Block breaks when highlighting text across multiple blocks

[claytoncollie]

Hi. I submitted this support thread and also thought it could go here. I am running into a problem with your plugin. When this plugin is activated, and you have a post with multiple paragraphs, then do a simple text highlight across multiple blocks, the first block where you started your selection breaks. You need to refresh the page without a save to get them working again. In my console there are some deprecation warnings and also an error by react-dom.

wp.components.IconButton is deprecated. Please use wp.components.Button instead.c @ 
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2 

wp.data.select( 'core/editor' ).getBlocks` is deprecated. 
Please use `wp.data.select( 'core/block-editor' ).getBlocks` instead.c @ 
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2 

Using custom components as toolbar controls is deprecated. 
Please use ToolbarItem or ToolbarButton components instead. See: https://developer.wordpress.org/block-editor/components/toolbar-button/#inside-blockcontrols c @ 
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2 

Using Toolbar without label prop is deprecated. Please use ToolbarGroup component instead. See: https://developer.wordpress.org/block-editor/components/toolbar/ c @ 
deprecated.min.js?ver=be1d4376501c21d85ba98dd28ca2d7ea:2

react-dom.min.js?ver=16.13.1:125 TypeError: Cannot read property 'name' of null
    at script.js?ver=d253bec9f726baa0adf9f8a3da958145:1
    at we (react-dom.min.js?ver=16.13.1:84)
    at He (react-dom.min.js?ver=16.13.1:97)
    at zj (react-dom.min.js?ver=16.13.1:228)
    at Th (react-dom.min.js?ver=16.13.1:152)
    at tj (react-dom.min.js?ver=16.13.1:152)
    at Te (react-dom.min.js?ver=16.13.1:146)
    at react-dom.min.js?ver=16.13.1:61
    at unstable_runWithPriority (react.min.js?ver=16.13.1:25)
    at Da (react-dom.min.js?ver=16.13.1:60)
Me @ react-dom.min.js?ver=16.13.1:125