The problem is described in title. I have a Bootstrap 4 modal and one popover with input field with buttons. In IE 11 everything is ok, but in Firefox input loses focus.
There is a simple mistake, you have tabindex="-1"
in your modal so your input focus is removing by it.
MODAL + INPUT POPOVER
$(function () {
$('[data-toggle="popover"]').popover({
container: 'body',
title: 'Search',
html: true,
placement: 'bottom',
sanitize: false,
content: function () {
return $("#PopoverContent").html();
}
});
})
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<section>
<div id="PopoverContent" class="d-none">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<div class="input-group-append" id="button-addon1">
<button class="btn btn-outline-primary" type="button" data-toggle="popover" data-placement="bottom"
data-html="true" data-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>
</div>
</section>
<section>
<div class="modal fade" id="exampleModal" role="dialog" aria-labelledby="exampleModalLabel"
aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Test modal</h5>
<button type="button" class="close" data-dismiss="modal" aria-label="Close">
<span aria-hidden="true">×</span>
</button>
</div>
<div class="modal-body">
<div class="container">
<div class="row">
<div class="col">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons"
aria-describedby="button-addon4">
<div class="input-group-append" id="button-addon4">
<button class="btn btn-outline-primary" type="button" data-toggle="popover">
<i class="fas fa-user-plus"></i>
</button>
<button class="btn btn-outline-danger" type="button">
<i class="fas fa-user-minus"></i>
</button>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
</section>
<div class="container">
<div class="row">
<div class="col mt-5">
<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal">
Launch demo modal
</button>
</div>
</div>
</div>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
<script defer src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>
INPUT POPOVER + INSIDE CONTENT
$(function () {
$('[data-toggle="popover"]').popover({
container: 'body',
html: true,
placement: 'bottom',
sanitize: false,
content:
`<div id="PopoverContent">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<div class="input-group-append" id="button-addon1">
<button class="btn btn-outline-primary" type="button" data-toggle="popover" data-placement="bottom"
data-html="true" data-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>
</div>`
})
});
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css">
<button type="button" class="btn btn-lg btn-danger" data-toggle="popover" title="Popover title">Click to toggle popover</button>
<script src="https://code.jquery.com/jquery-3.4.0.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
INPUT POPOVER + OUTSIDE CONTENT
$(function () {
$('[data-toggle="popover"]').popover({
container: 'body',
html: true,
placement: 'bottom',
sanitize: false,
content: function() {
return $('#PopoverContent').html()
}
})
});
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css">
<div id="PopoverContent" class="d-none">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<div class="input-group-append" id="button-addon1">
<button class="btn btn-outline-primary" type="button" data-toggle="popover" data-placement="bottom"
data-html="true" data-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>
</div>
<button type="button" class="btn btn-lg btn-danger" data-toggle="popover" title="Popover title">Click to toggle popover</button>
<script src="https://code.jquery.com/jquery-3.4.0.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script>
MODAL + INPUT POPOVER
const popover = new bootstrap.Popover(document.querySelector('.callPopover'), {
container: 'body',
title: 'Search',
html: true,
placement: 'bottom',
sanitize: false,
content() {
return document.querySelector('#PopoverContent').innerHTML;
}
})
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.8.1/css/all.css">
<section>
<div id="PopoverContent" class="d-none">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<button class="btn btn-outline-primary" type="button" data-bs-toggle="popover" data-bs-placement="bottom" data-bs-html="true" data-bs-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>
</section>
<section>
<div class="modal fade" id="exampleModal" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h5 class="modal-title" id="exampleModalLabel">Test modal</h5>
<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
</div>
<div class="modal-body">
<div class="container">
<div class="row">
<div class="col">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username" aria-label="Recipient's username with two button addons" aria-describedby="button-addon4">
<button class="btn btn-outline-primary callPopover" type="button" data-bs-toggle="popover">
<i class="fas fa-user-plus"></i>
</button>
<button class="btn btn-outline-danger" type="button">
<i class="fas fa-user-minus"></i>
</button>
</div>
</div>
</div>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
</section>
<div class="container">
<div class="row">
<div class="col mt-5">
<button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#exampleModal">
Launch demo modal
</button>
</div>
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>
INPUT POPOVER + INSIDE CONTENT
const popover = new bootstrap.Popover(document.querySelector('[data-toggle="popover"]'), {
container: 'body',
title: 'Search',
html: true,
placement: 'bottom',
sanitize: false,
content: `<div id="PopoverContent">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<button class="btn btn-outline-primary" type="button" data-toggle="popover" data-placement="bottom"
data-html="true" data-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>`
})
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
<button type="button" class="btn btn-lg btn-danger" data-toggle="popover" title="Popover title">Click to toggle popover</button>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>
INPUT POPOVER + OUTSIDE CONTENT
const popover = new bootstrap.Popover(document.querySelector('.callPopover'), {
container: 'body',
title: 'Search',
html: true,
placement: 'bottom',
sanitize: false,
content() {
return document.querySelector('#PopoverContent').innerHTML;
}
})
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-giJF6kkoqNQ00vy+HMDP7azOuL0xtbfIcaT9wjKHr8RbDVddVHyTfAAsrekwKmP1" crossorigin="anonymous">
<div id="PopoverContent" class="d-none">
<div class="input-group">
<input type="text" class="form-control" placeholder="Recipient's username"
aria-label="Recipient's username with two button addons" aria-describedby="button-addon1">
<button class="btn btn-outline-primary" type="button" data-toggle="popover" data-placement="bottom"
data-html="true" data-title="Search">
<i class="fas fa-search"></i>
</button>
</div>
</div>
<button type="button" class="btn btn-lg btn-danger callPopover" data-toggle="popover" title="Popover title">Click to toggle popover</button>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta1/dist/js/bootstrap.bundle.min.js" integrity="sha384-ygbV9kiqUc6oa4msXn9868pTtWMgiQaeYH7/t7LECLbyPA2x65Kgf80OJFdroafW" crossorigin="anonymous"></script>
<script defer src="https://use.fontawesome.com/releases/v5.8.1/js/all.js"></script>