Hi. Went to the timeline under 'tools' to get info on John the Baptist. Found that he was beheaded in AD 29 and arrested ca 30/31 AD. Oops.
Hello Vernon,
welcome to the Logos user forums!
The aspect you referred to as "glitch" was discussed quite recently in this thread: https://community.logos.com/forums/t/104057.aspx - basically the reason for this ehavior is that the timeline collects dating information throughout your library and different authors come to different results in their estimates for biblical events.
Hope this helps,
Mick