Looks like the cursor has a problem when editing markdown content

Very easy to reproduce in deepseek R1

It happens when the resulting markdown contains a code block. The code block kind of make the composer switch form ā€œfile contentā€ to ā€œoutput contentā€. The result is that the target markdown file only contains the changes prior to the code block and the composer output contains the rest.

Hey, does this happen with any model specifically, or all of them?