draw_logs read the level from the log line's Display output, which drops the first offset characters. Once a log line is scrolled, the field at index 1 is no longer the level: past the timestamp it yields the logger name and colours the row wrong, and past the final delimiter the index is out of bounds and panics, taking the TUI down.
Parse log.text instead, matching what draw_logs_popup already does. The displayed text is unchanged.