Blender extrude problem I'm currently learning blender as a beginner by Blender Guru. When I was making the mug, I had to extrude the top to form the interior of the mug. But as I was extruding the top part of the mug, the top part of the mug is seen and the interior is not shown. Here are the screenshots:





I was thinking the problem was the inset above the cup. But I tried to fix it many amount of times but it gives the same problem. The interior of the cup should be seen. Is there a way to solve this problem?
The issue there is that you are selecting the two innermost loops of the cup, but if you only select the innermost loop, it will extrude correctly. In the images below, I only select the innermost loop, and it extrudes correctly.



Result after extruding only the innermost loop instead of the two loops in your picture.