Describe the issue

When rendering a MarkDecoration, the editor view always splits the decoration into several elements if the decorated range spans more than 512 characters, even if all those characters are on the same line.

For example, in this sandbox I expect to have just one decoration around the entire (very long) line. But my element is split into several elements, as you can see by the presence of the red border line inside the text of the line.

Browser and platform

Chrome 140 on MacOS Sequoia 15.6.1

Reproduction link

https://codesandbox.io/p/devbox/beautiful-sound-forked-lc8prr?workspaceId=ws_DetuLAcjQzqJD8grNFUmK7