Because if we cannot reproduce the problem, we cannot fix it. And if it is with UI we must also provide screenshot of reproduction of the issue, for human to vefiry.
Please collect data related about the issue to this repository, make sure we compile that data to ./docs/case-studies/issue-{id} folder, and use it to do deep case study analysis (also make sure to search online for additional facts and data), and propose possible solutions (including known existing components/libraries, that solve similar problem or can help in solutions).