How do you fix this code to prevent "Not running script because past shutdown deadline"?

Help and Feedback Code Review
#1

Here’s a partial code of my event handler script. Most of the time when I exit out of studio, the process takes a lot of time to kill the running scripts. One of the running scripts affects the process and takes it longer to shut down. I found out that it was my event handler. I wasn’t sure why this happened because a couple months ago, I never seen this happened, but I wanted to point this out because it kept bugging me out.

-- idleTimeout: number (optional)
-- runService: game:GetService'RunService'
-- readyToReturn: boolean -> this variable is marked after one of the specified event handlers is done
-- wait: task.wait

local stWait = os.time()
repeat
	wait()
	if not runService:IsRunning() then break end
until
	(idleTimeout and os.time()-stWait > idleTimeout) or readyToReturn

In the code, I added a break loop if the game isn’t running anymore, but somehow it still affects studio.

How do I fix this issue?

#2

The real question is why do you have this code in your game? I’m not surprised at all that such error occurs. Aren’t you looking for something like game:BindToClose? Otherwise, explain what you’re trying to achieve with this because it’s certainly not the right way to do so.