Created attachment 160280 [details] Screenshots of configurations and result SUMMARY *** NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports *** STEPS TO REPRODUCE 1. Build a report to display values in the past (see configurations files) 2. Click on apply. 3. The report is flat. See file result. OBSERVED RESULT No correct value is displayed. Every in null. EXPECTED RESULT Real values should be displayed, not null SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Arch Linux. (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: Version 5.15.10 (Compilé avec 5.15.10) ADDITIONAL INFORMATION If the chosen interval is in the futur, the values are correct.