The Cyclic Lines indicator is adding one extra minute on every cycle instead of respecting the configured interval.

For example, when the interval is set to 30 minutes, the timestamps are displayed as:

Incorrect behavior:

9:30 - 10:00 - 10:31 - 11:02 - 11:33 - 12:04

Expected behavior:

9:30 - 10:00 - 10:30 - 11:00 - 11:30 - 12:00

As shown above, starting from the second cycle onward, each new line is shifted by +1 minute and the offset keeps accumulating over time.