Table within excerpt macro shows unnecessary scroll bar for the width

Issue Summary

There will be a scroll-bar for the width of the table within excerpt macro even though it is not needed.

Steps to Reproduce

1. Create a new page, add "excerpt" macro
2. Add table inside of "excerpt" macro, make it 1-cell table.
3. Add text to the cell, preferably long one, without spaces.
4. Make page full-width, add couple characters at the end of the text, make page fixed-width again.
5. Publish the page. At this point it is still working as expected.
6. Repeat step #4: edit page -> make page full-width -> add a couple of characters at the end -> make page fixed-width -> publish

Expected Results

Macro is shown properly, no scroll bars, according to the page width.

Actual Results

If you hover over the excerpt macro, you can see there will be a scroll bar for the width (screenshot of a page with an excerpt macro with a coloured 1-cell table within)

Workaround

N/A