Fixed in the refreshed JEM 5.0.2 Beta 1 packages.
Day Timeline navigation now keeps the current menu item, including its title and filters, when changing dates. The fix also keeps Timetable’s Today button within the current menu and layout. No menu recreation is needed.
Please download the updated package from the beta downloads page, test Today, Previous and Next, and confirm that the title and filtered events remain correct.
Download JEM 5.0.2 beta 1 from:
www.joomlaeventmanager.net/download/beta-versions
More info in the issue:
github.com/jemproject/JEM-Project/issues/2360
Thank you for reporting and testing this.