Are you using the default template or a customized one?. I'm afraid we can't help you anymore if you don't describe better how to reproduce this issue. Imagine this situation: you go to the doctor and only say: "I feel bad", the doctor says "What you have eaten", and you as patient keep repeating "I don't feel well"...
sorry for this example (I don't want to sound rude), but we need much more details to try to help you (like the exact version of your browser, operating system, RAM memory, etc), and
the exact steps to reproduce the issue. You could also follow the steps described on this post,
here.