Position Sticky not working on Microsoft Edge 41.* - css-position

Question

I've created a little jsfiddle for a Floating Action Button.
It seems to work just fine on iOS, Desktop and Android using Chrome, Firefox, Safari, Explorer and Edge version 40 BUT as soon as I update to Edge version 41 (the latest) it breaks!
I wonder if I'm doing something wrong or if something changed in the last version of Edge that breaks "position: sticky"?
I've google this issue and checked here too but I don't seem to find an answer ...
Thank you for your time!
JSFIDDLE
.fab-overlay {
right: 10px;
bottom: 10px;
position: fixed;
}
.fab-overlay .fab-container {
width: 55px;
position: sticky;
}
.fab-overlay .fab-container .fab {
float: right;
width: 55px;
height: 55px;
border-radius: 50%;
-webkit-border-radius: 50%;
-moz-border-radius: 50%;
-khtml-border-radius: 50%;
background-color: red;
}
<div class="page-content">
What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting
industry. Lorem Ipsum has been the industry's standard dummy text
ever since the 1500s, when an unknown printer took a galley of type
and scrambled it to make a type specimen book. It has survived not
only five centuries, but also the leap into electronic typesetting,
remaining essentially unchanged. It was popularised in the 1960s
with the release of Letraset sheets containing Lorem Ipsum passages,
and more recently with desktop publishing software like Aldus
PageMaker including versions of Lorem Ipsum.
Why do we use it?
It is a long established fact that a reader will be distracted by the
readable content of a page when looking at its layout. The point of
using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed to using 'Content here, content here', making
it look like readable English. Many desktop publishing packages and
web page editors now use Lorem Ipsum as their default model text,
and a search for 'lorem ipsum' will uncover many web sites still in
their infancy. Various versions have evolved over the years,
sometimes by accident, sometimes on purpose (injected humour and the
like).
What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting
industry. Lorem Ipsum has been the industry's standard dummy text
ever since the 1500s, when an unknown printer took a galley of type
and scrambled it to make a type specimen book. It has survived not
only five centuries, but also the leap into electronic typesetting,
remaining essentially unchanged. It was popularised in the 1960s
with the release of Letraset sheets containing Lorem Ipsum passages,
and more recently with desktop publishing software like Aldus
PageMaker including versions of Lorem Ipsum.
Why do we use it?
It is a long established fact that a reader will be distracted by the
readable content of a page when looking at its layout. The point of
using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed to using 'Content here, content here', making
it look like readable English. Many desktop publishing packages and
web page editors now use Lorem Ipsum as their default model text,
and a search for 'lorem ipsum' will uncover many web sites still in
their infancy. Various versions have evolved over the years,
sometimes by accident, sometimes on purpose (injected humour and the
like).
What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting
industry. Lorem Ipsum has been the industry's standard dummy text
ever since the 1500s, when an unknown printer took a galley of type
and scrambled it to make a type specimen book. It has survived not
only five centuries, but also the leap into electronic typesetting,
remaining essentially unchanged. It was popularised in the 1960s
with the release of Letraset sheets containing Lorem Ipsum passages,
and more recently with desktop publishing software like Aldus
PageMaker including versions of Lorem Ipsum.
Why do we use it?
It is a long established fact that a reader will be distracted by the
readable content of a page when looking at its layout. The point of
using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed to using 'Content here, content here', making
it look like readable English. Many desktop publishing packages and
web page editors now use Lorem Ipsum as their default model text,
and a search for 'lorem ipsum' will uncover many web sites still in
their infancy. Various versions have evolved over the years,
sometimes by accident, sometimes on purpose (injected humour and the
like).
What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting
industry. Lorem Ipsum has been the industry's standard dummy text
ever since the 1500s, when an unknown printer took a galley of type
and scrambled it to make a type specimen book. It has survived not
only five centuries, but also the leap into electronic typesetting,
remaining essentially unchanged. It was popularised in the 1960s
with the release of Letraset sheets containing Lorem Ipsum passages,
and more recently with desktop publishing software like Aldus
PageMaker including versions of Lorem Ipsum.
Why do we use it?
It is a long established fact that a reader will be distracted by the
readable content of a page when looking at its layout. The point of
using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed to using 'Content here, content here', making
it look like readable English. Many desktop publishing packages and
web page editors now use Lorem Ipsum as their default model text,
and a search for 'lorem ipsum' will uncover many web sites still in
their infancy. Various versions have evolved over the years,
sometimes by accident, sometimes on purpose (injected humour and the
like).
What is Lorem Ipsum?
Lorem Ipsum is simply dummy text of the printing and typesetting
industry. Lorem Ipsum has been the industry's standard dummy text
ever since the 1500s, when an unknown printer took a galley of type
and scrambled it to make a type specimen book. It has survived not
only five centuries, but also the leap into electronic typesetting,
remaining essentially unchanged. It was popularised in the 1960s
with the release of Letraset sheets containing Lorem Ipsum passages,
and more recently with desktop publishing software like Aldus
PageMaker including versions of Lorem Ipsum.
Why do we use it?
It is a long established fact that a reader will be distracted by the
readable content of a page when looking at its layout. The point of
using Lorem Ipsum is that it has a more-or-less normal distribution
of letters, as opposed to using 'Content here, content here', making
it look like readable English. Many desktop publishing packages and
web page editors now use Lorem Ipsum as their default model text,
and a search for 'lorem ipsum' will uncover many web sites still in
their infancy. Various versions have evolved over the years,
sometimes by accident, sometimes on purpose (injected humour and the
like).
</div>
<div class="fab-overlay">
<footer class="footer fab-container">
</footer>
</div>