Problem with Chitubox Slicer

[supaman8472]

So I am knew at this and after creating a cube I needed it was to large. So I decided to split it into two pieces and make slots to hold them together with minimum glue. However, after using the Chitubox slicer it seems to have change a few things on the cube. I have added photos so it is much easier to see what I mean. Also, let me know if this is just a software bug and it will not affect the print or if there is something wrong. I have tried re-slicing a few times and it comes out the same.
Thank you all.