1. The border of the CSS class *_cell_focus doesn't appear around events
2. The top border of the CSS class *_cell_focus doesn't appear around the cells located directly below the timeline
Please see also this short video: https://drive.google.com/file/d/11q1h94hKclKEXlb0kqgCeP_MrAMp5bog/view?usp=sharing
I created the theme using the "DayPilot Theme Designer" (https://themes.daypilot.org/scheduler/create) without changing anything in the generated CSS-file.
With the default theme I don't have these issues.