For my release 5, I decided to go and work with multiple cursors again. I found this bug that had to do with how VSCode cannot handle multiple cursors with the command. The result of join lines would not produce the desired result.
With my previous knowledge, I am able to start investigating sooner. Going to line 659 in linesOperations.ts shows where the code for join lines exists.
For next week, I’ll continue working on this bug.