I'm the current maintainer of https://github.com/madebymany/sir-trevor-js which we started in 2012. At the time we had a fully block based approach and migrated to more of a document based approach when medium.com gained traction.
Since then we've debated what's the best approach for cross block selection as now the expected behaviour is very much that of a text editor such as word rather than a block based editing tool which it started out as. A couple of years ago we embarked on a rewrite that saw us look for a solution to the problem that would solve this. Not just a block based selection, but a cursor based selection between blocks, but this never got to a level we were happy with.
I think with the evolution of online editing over the years and editors such as notion.so the approach they've taken with the multiple contenteditable elements is a good first step. Over time we'll see how far they are able to take it. Adding features such as cross browser support, undo / redo and keyboard navigation.
We lost our brother a while ago. Known to many as Matthew Rudy with the silent Jacobs at the end. Nobody has ever been prouder of their middle name.
I've found it useful reading about other people's loss. Here's the latest book I read. https://www.theguardian.com/books/2022/jan/29/my-partner-die...