There is an enormous amount of hate directed at JIRA that is a side effect of customizations created by admins. People abuse the customizability and their own internal users suffer the consequences.
Atlassian's own public issue tracker is using a near-default issue display screen. Nothing is "below the fold" for me on this issue and on a small monitor: https://jira.atlassian.com/projects/CORE/issues/CORE-1055