F7+Vue: Why does F7 strip class from navbar for iOS?

When F7 detects ios, it turns this

<f7-page class="color-theme-blue">
    <f7-navbar class="color-theme-blue" title="Cool App" back-link />

into this:

<div class="navbar">
  <div class="navbar-inner sliding navbar-current">
    <div class="left">
      <a href="#" class="link icon-only back icon-only">
        <i class="icon icon-back"></i>
    <div class="title" style="left: -322px;">Cool App</div>
<div class="color-theme-blue page page-current">
  <div class="page-content"></div>

Where as in Android (MD), it maintains the custom class on the navbar.

Anyone else run into this, or know any workarounds to maintain custom classes?