30 min chart bar timing is strange

[Shiner452]

My 30 minute chart seems to have a glitch where its bars are 30 minutes but at strange intervals. It goes from 8:45 to 9:15 to 9:45 to 10:15 and so forth. Its a strange occurrence and I cannot seem to duplicate it or find out how it is like this...any ideas?

[NinjaTrader_Oxana]

Hello,
Thank you for your post.

Please right-click in a background of the chart, then select Data Series.
In the Data Series window, set Trading hours to Default 24x7.
Then click 'Apply' and 'OK'.

After that, right-click the chart and select "Reload All Historical Data".

If you continue to experience the same, please email us your log and trace files right from the NinjaTrader platform (by going to Help-> Email Support), and attach a screenshot of your chat, so we may investigate this matter further. Ensuring 'Log and Trace Files' is checked will include these files. This is checked by default.
Thank you!