I tried to use the input group with the addon by inserting a select as the input and I noticed that the select has rounded corners, as if it were not inside the group.
Do you think it would be possible for you to consider supporting this control inside the group in order to have behavior identical to that of a text box?

<div class="kt-input-group">

    <span class="kt-input-addon">Framework</span>

<select

  class="kt-select"

  data-kt-select="true"

  data-kt-select-placeholder="Select a framework">

  <option value="blazor">Blazor</option>

</select>

  </div>