I really don’t know but we have seen where some backups or other things get stuck there and it produces some unexpected behavior. You could try just deleting the entire .kodi/temp folder and restarting Kodi and see if that makes a difference.
When those two time jumps happen the only thing in the log is CEC communication. I would try deleting your CEC settings and retest…
systemctl stop mediacenter
rm ~/.kodi/userdata/peripheral_data/cec_CEC_Adapter.xml
systemctl start mediacenter