As a Roblox developer, it is currently IMPOSSIBLE to debug when testing the game in Multi-Client Simulation.
If Roblox is able to address this issue, it would improve my development experience because we will be able to debug the code when testing the game in Multi-Client Simulation.
There has been internal interest and research into this. One of the reasons we overhauled the debugger was to make this feasible from an architectural standpoint. However, there aren’t currently any plans to implement this in the near future. I’ll update this thread if this changes.