Hello :)
I have this issue that I'm not sure whether it is something normal or not. So, after modelling rocket nose cone, when in Edit Mode, I have this weird clipping issue. That exists only in Edit Mode; not in Object Mode.
Is that normal or have I done something incorrectly?
This is not called clipping, but Z-fighting and it is caused by two or more Faces being 'in the same place'...
This also happens in Object Mode, but might not be so noticeable...
Try this: select everything (in Edit Mode) with A and then: ALT+M > Merge by Distance. This will make sure that there are no two Vertices at the same position and hence no overlapping Faces.