After upgrading to dmenu 4.9, i noticed it loses focus after typing the first character (when using it in i3). In this thread they mention it maybe a bug in 4.9, that has been solved recently: https://discussion.fedoraproject.org/t/dmenu-crash-after-update/1405/4 Reverting to 4.8 solves the problem for now.
FEDORA-2019-177307aa1e has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-177307aa1e
dmenu-4.9-3.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-177307aa1e
dmenu-4.9-3.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.