Break Text Thread not work for type on path.

[SumitCo]

Problem:
Break Text Thread not work for type on path.

Method:

1. Launch ID, new a doc.
2. Draw 2 lines with pencil tool.
3. Select type on path tool and fill with some text, thread them.
4. Select the first text line, click BreakTextThread script to apply.
5. Observe.

Result:
nothing happen.

Expected:
Text thread should be broken.