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Sorry for the added .xar at the file name.
The one with the additional <p> tag is this
114701
The one with the missing > at the end is the one placed on the layer: hbc press releases.

There had been two problems.
One placeholder had an additional <p> tag without a closing tag.
one placeholder was missing a > at the end.

The corruption doesn't have to be caused on the variant that shows the problem. It may be a corruption on the main variant.
An example file really would help.

Hard to tell without a look at it. But similar problems can be caused by placeholders that contain invalid HTML, for example with missing closing tags.