Bold text inside underlined text does not display correctly

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Steps to reproduce

  1. Go to live preview mode and type something like this:
<u>Underline text, **underline and bold text**</u>
  1. The result, in live preview, will be like this:

Expected result

I expect the “** **” to be not visible and having the same experience of reading mode.

we don’t support mixing markdown in html blocks.