Why does the outside of my glass of coffee look strange? I'm currently following Blender Guru's beginner donut tutorial and I just completed Level 3 Part 4 where we made coffee, but for some reason, the liquid as viewed from the outside of the glass looks strange. Here’s the picture of the render:  Maybe this is what it is supposed to look like, but please tell me how to fix this if this is wrong. Thank you!

By the way, I am using the Blender 2.8 default denoiser with 128 samples and the Filmic Blender configuration that Blender Guru recommended.
Did you do the part where you slightly scaled up the liquid so it overlapped the glass a little bit?  That's what it looks like to me.