"Focus issues" refers to difficulties or problems with concentrating or paying attention to something specific. It means having trouble staying focused on a task or maintaining one's attention on a particular subject. Full definition
The case clearly brings into focus the issue of responsibility of co-authors. (sciencemag.org)
Anxiety can often show up as focus issues or ADHD, especially in children who may not be able to articulate that they are anxious. (everywomanover29.com)
For more than two decades we have successfully brought into focus an issue worthy of global and Australian attention. (crawfordfund.org)