Discrete Timing 't' showing on previous channels

Working on an a tour showfile, programmed by someone else.

They have used discrete timing and the 't' in the tombstone is showing on the correct channel but also previous channel.

So I'm seeing a 't' on channel 23 and the 't' is also showing on channel 22. This is only in Live, Blind is displaying correctly.

2.7.3

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