Colors styling doesn't work with <s> and <u>

[meceo]

in lexxy editor the element

<mark data-lexical-text="true" style="color: var(--highlight-3); background-color: var(--highlight-bg-2);">
  <strong class="lexxy-content__bold lexxy-content__highlight lexxy-content__italic lexxy-content__strikethrough">
    TEST
  </strong>
</mark>

with proper color and background color display

in lexxy-content is turned into the element with tags like <s> or <u>

<p>
  <s>
    <i>
      <mark style="background-color: var(--highlight-bg-2);color: var(--highlight-3);">
        <strong>TEST</strong>
      </mark>
    </i>
  </s>
</p>

and does not apply color or background color in full