After creating a new GUI, I found out that the slots do not line up properly, despite having enabled snap-to-grid, and despite the slots appearing to line up correctly.
This seems to happen if I copy a previously made gui and then reposition/add new slots or if I add new slots to a gui that was already created.
In my workspace, I copied the CrateGUI element and named it CrateGUI2, resized the GUI and repositioned the slots, and then saved it.
Attached is my workspace and the png file it created.
How do I open this gui ingame?