Am I doing something wrong?

[kindred carbon]

there are certain times when I'll adjust a vertex point and the face of the object will contort weird? I don't know what triggers it nor how to fix it. Any explanation would be of much help.

[marble depot]

Welcome to the help forum!

Please make sure to read #1021015331910713395 as it may answer your question!

Once your question has been resolved, please mark the post as closed by using the </close:1163944441741049897> command.

[kindred carbon]

another angle that kinda shows what i'm talking about more

[rotund lichen]

So this is because

Computers don’t actually render quads

They render a quad as two triangles