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Issue created by Administrator@rootContributor3 of 3 checklist items completed3/3 checklist items

Bootstrap Sidebar example fails when reducing sidebar examples to a single one

Created by: soypat

Prerequisites

Describe the issue

Cleaning up sidebar example dividers makes the sidebar not occupy 100% of vertical space. Apparently the contents of main element must be greater than 1 or else this bug happens. https://getbootstrap.com/docs/5.0/examples/sidebars/

Reduced test cases

To witness bug please delete the <div class="b-example-divider"></div> element.

<!doctype html>
<html lang="en">
  <head>
      <title>Hello.</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <meta name="description" content="">
    <meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
    <meta name="generator" content="Hugo 0.84.0">
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
    <style>
            body {
    min-height: 100vh;
    min-height: -webkit-fill-available;
    }

    html {
    height: -webkit-fill-available;
    }

    main {
    display: flex;
    flex-wrap: nowrap;
    height: 100vh;
    height: -webkit-fill-available;
    max-height: 100vh;
    overflow-x: auto;
    overflow-y: hidden;
    }

    .b-example-divider {
    flex-shrink: 0;
    width: 1.5rem;
    height: 100vh;
    background-color: rgba(0, 0, 0, .1);
    border: solid rgba(0, 0, 0, .15);
    border-width: 1px 0;
    box-shadow: inset 0 .5em 1.5em rgba(0, 0, 0, .1), inset 0 .125em .5em rgba(0, 0, 0, .15);
    }

    .bi {
    vertical-align: -.125em;
    pointer-events: none;
    fill: currentColor;
    }

    .dropdown-toggle { outline: 0; }

    .nav-flush .nav-link {
    border-radius: 0;
    }

    .btn-toggle {
    display: inline-flex;
    align-items: center;
    padding: .25rem .5rem;
    font-weight: 600;
    color: rgba(0, 0, 0, .65);
    background-color: transparent;
    border: 0;
    }
    .btn-toggle:hover,
    .btn-toggle:focus {
    color: rgba(0, 0, 0, .85);
    background-color: #d2f4ea;
    }

    .btn-toggle::before {
    width: 1.25em;
    line-height: 0;
    content: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='rgba%280,0,0,.5%29' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M5 14l6-6-6-6'/%3e%3c/svg%3e");
    transition: transform .35s ease;
    transform-origin: .5em 50%;
    }

    .btn-toggle[aria-expanded="true"] {
    color: rgba(0, 0, 0, .85);
    }
    .btn-toggle[aria-expanded="true"]::before {
    transform: rotate(90deg);
    }

    .btn-toggle-nav a {
    display: inline-flex;
    padding: .1875rem .5rem;
    margin-top: .125rem;
    margin-left: 1.25rem;
    text-decoration: none;
    }
    .btn-toggle-nav a:hover,
    .btn-toggle-nav a:focus {
    background-color: #d2f4ea;
    }

    .scrollarea {
    overflow-y: auto;
    }

    .fw-semibold { font-weight: 600; }
    .lh-tight { line-height: 1.25; }
    </style>

</head>

<body>

<main>

<div class="d-flex flex-column flex-shrink-0 bg-light" style="width: 4.5rem;">
    <a href="/" class="d-block p-3 link-dark text-decoration-none" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Icon-only">
        <svg class="bi" width="40" height="32"><use xlink:href="#bootstrap"></use></svg>
        <span class="visually-hidden">Icon-only</span>
    </a>
    <ul class="nav nav-pills nav-flush flex-column mb-auto text-center">
        <li class="nav-item">
        <a href="#" class="nav-link active py-3 border-bottom" aria-current="page" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Home">
            <svg class="bi" width="24" height="24" role="img" aria-label="Home"><use xlink:href="#home"></use></svg>
        </a>
        </li>
        <li>
        <a href="#" class="nav-link py-3 border-bottom" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Dashboard">
            <svg class="bi" width="24" height="24" role="img" aria-label="Dashboard"><use xlink:href="#speedometer2"></use></svg>
        </a>
        </li>
        <li>
        <a href="#" class="nav-link py-3 border-bottom" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Orders">
            <svg class="bi" width="24" height="24" role="img" aria-label="Orders"><use xlink:href="#table"></use></svg>
        </a>
        </li>
        <li>
        <a href="#" class="nav-link py-3 border-bottom" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Products">
            <svg class="bi" width="24" height="24" role="img" aria-label="Products"><use xlink:href="#grid"></use></svg>
        </a>
        </li>
        <li>
        <a href="#" class="nav-link py-3 border-bottom" title="" data-bs-toggle="tooltip" data-bs-placement="right" data-bs-original-title="Customers">
            <svg class="bi" width="24" height="24" role="img" aria-label="Customers"><use xlink:href="#people-circle"></use></svg>
        </a>
        </li>
    </ul>
    <div class="dropdown border-top">
        <a href="#" class="d-flex align-items-center justify-content-center p-3 link-dark text-decoration-none dropdown-toggle" id="dropdownUser3" data-bs-toggle="dropdown" aria-expanded="false">
        <img src="https://github.com/mdo.png" alt="mdo" width="24" height="24" class="rounded-circle">
        </a>
        <ul class="dropdown-menu text-small shadow" aria-labelledby="dropdownUser3">
        <li><a class="dropdown-item" href="#">New project...</a></li>
        <li><a class="dropdown-item" href="#">Settings</a></li>
        <li><a class="dropdown-item" href="#">Profile</a></li>
        <li><hr class="dropdown-divider"></li>
        <li><a class="dropdown-item" href="#">Sign out</a></li>
        </ul>
    </div>
</div>
<div class="b-example-divider"></div>
</main>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
<script>
    /* global bootstrap: false */
(function () {
  'use strict'
  var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
  tooltipTriggerList.forEach(function (tooltipTriggerEl) {
    new bootstrap.Tooltip(tooltipTriggerEl)
  })
})()
</script>
</body>
</html>

What operating system(s) are you seeing the problem on?

Linux

What browser(s) are you seeing the problem on?

Chrome

What version of Bootstrap are you using?

v5.1.3