Issue Summary

Some macros in table cells prevent removing header formatting

This is reproducible on Data Center: yes

Steps to Reproduce

1. Create new page foo
2. Insert table 2x2
3. Insert table heading e.g. A | B
4. Fill cells with text e.g. C | D
5. In the right column for the second row, replace the text (D) with the Info macro, for example
6. Format the second row as heading by clicking the "Heading row"
7. Remove "Heading row" formatting by clicking it again

Expected Results

The row is no longer formatted as "Heading row"

Actual Results

The formatting as "Heading row" is not removed

Workaround

You need to remove the macro inside the cell for that row before undoing the "Heading row" operation.