This bug is happening every time and to any place I open up with every single part. I just asked a few developers to test it and they are saying they have the same issue. I went through and reinstalled roblox studios to see if this would fix the issue but it did not.
Currently I believe everyone has this issue but I am not 100% sure. I also believe this bug just started today.
This is a well-known bug, floating point errors. Basically, there are minor inconsistencies with the rounding system which often adds or subtracts minuscule amounts unless you’re using a grid of something that can be squared to an integer. Even then, floating point errors can and will occur.