Problem with adding numbers

[cnr123451 (Cnr)]

Roblox made a change to tostring recently, which is also called when you use the concatenation operator.

Behavior change: tostring() will start returning shortest precise decimal representation of numbers

TL;DR We’re going to be making a change to tostring() printing numbers that may result in printing longer output with decimal digits that you haven’t seen before. If you were relying on number-to-string conversions producing up to a given number of decimals, you should probably use string.format("%.1f", v) instead or equivalent (this expression prints up to one decimal digit). If you want to use the exact same formatting method that we’ve used before as part of tostring, you can use string.for…

I’m not 100% sure but It could be this.