no – I have not observed that yet. Yes the starting of selfhosted video was a problem too – but on my av-helper-slideshow.php the fix was integrated already.
I thought that irdh has one of my edited alb elements used – and after update the code was changed so much that the old version does not do what was intended to do.
I have always a little time-shift between these changings but they will come soon as alway here: https://webers-testseite.de/edited-enfold-alb-elements/

actually I think it’s a pity that these small improvements are not taken over into the code, because for example I think it makes sense to determine the h-tag in the captions, or on icon-box or icon-list element.
Or to have an anchor alternative to the color section. So i made my hr with ID Option – this could be even used when sidebar is active.

oh – so sorry – that was my fault. ( i edit it above too)

erase the functions.php code you have inserted – that was to substitute the shortcodes.js file:
this is the code you need to substitute the shortcodes. – yes the place you uploaded them was correct.
Sometimes you have to edit those sliders again – just open and save.

add_filter('avia_load_shortcodes', 'avia_include_shortcode_template', 15, 1);
function avia_include_shortcode_template($paths){
  $template_url = get_stylesheet_directory();
      array_unshift($paths, $template_url.'/shortcodes/');
  return $paths;
}

This is a place on source code where normaly no-one comes to.

Did you have an own edited footer.php file ?
after that code here: <div id="fb-root"></div>
there was something placed by wp-stats

for example : the BONN is a path on that svg and that path has class st3:
so on shrinking the opacity is changed from 1 to 0 in one second

.st3 {
    transition: all 1s ease-in-out;
    opacity: 1
}
.header-scrolled .st3 {
    transition: all 1s ease-in-out;
    opacity: 0
}

Well these advanced settings might be nice to have.
See here and look what happens to the svg on shrinking – or on making the screenwidth smaller !
https://webers-testseite.de/cynthia/

You can handle path of the svg on hovering f.e to color them different etc.

And if i see your hint with the autoplay.
if you load the video with options – f.e. as iframe.
only the first option is with questionmark ? all the other following options have to be added by &

so videolink?autoplay=1&loop=1&iframe=true etc
One exception is with youtube videos – if the link is with: watch?v= so allthough there is a ? the first option after video link must have the ? then &

well i guess you are one of those who uses my edited alb elements. Link
it seems that there are some changings on 4.3 (and 4.3.1) so please download the zip-file again from my page and have a look if this will be than ok:
https://webers-testseite.de/Slideshows.zip

Sorry but i need a little time to edit them
see result: https://webers-testseite.de/cynthia/slideshows/

first of all the header is on that page styled to be on the whole width of the screen.
Goto Enfold Child – Header – Header Behavior – and mark: “Let logo and menu position adapt to browser window”

this would have been a bit easier to know first.

for the logo on top left nearby the other images i would do it the same way – but not with your long logo – something like:

if you like some gimmicks :lol

#top #wrap_all .social_bookmarks li a:hover {
    transform: scale(1.4);
    transform-origin: top left;
    transition: 1s all ease-in-out;
    z-index: 3;
}

here on total

#top #wrap_all .av-social-link-theorytest a:before,
#top #wrap_all .av-social-link-labs a:before
{
    content: "";
    width: 25px;
    height: 25px;
    display: inline-block;
    vertical-align: middle;
    background-size: contain !important;
}

.responsive #top #header .social_bookmarks { display: block !important}

#top #wrap_all .av-social-link-theorytest a:before {
background: url(https://haqsfashions.website/helixcloudservices/wp-content/uploads/2018/05/Theory_Test_App_icon.png) no-repeat center center
}

#top #wrap_all .av-social-link-labs a:before {
background: url(https://haqsfashions.website/helixcloudservices/wp-content/uploads/2018/05/Screen_Shot_20180430_at_105941.png) no-repeat center center
}

#top #wrap_all .av-social-link-theorytest:hover a {
    background-color: #d11a4e !important;
}

#top #wrap_all .av-social-link-labs:hover a {
    background-color: #46d4fe !important;
}

@media only screen and (max-width: 767px) {

.responsive #header .social_bookmarks {
	text-align: left;
	width: 25%}
	.responsive #top #header .social_bookmarks {
	display: inline-block !important;
}
.responsive #header .sub_menu {
	float: right !important;
	width: 75%;  
}

.responsive #header .sub_menu ul {
    text-align: right;
}
}

size: change that to:

#top #wrap_all .av-social-link-theorytest a:before,
#top #wrap_all .av-social-link-labs a:before
{
    content: "";
    width: 25px;
    height: 25px;
    display: inline-block;
    vertical-align: middle;
    background-size: contain !important;
}

by the way – was it complex to integrate the edfm-fly-menu to enfold ?

on my 4.3 Enfold that works perfect !

PS : the new 4.3.1 is there but sadly these fixes aren’t included.

if that above was you code you have in it: the quotation marks are not code marks.

Das waren teilweise geschwungene Anführungszeichen. Dann funktioniert es auch nicht mit dem code.