Can you please check another browser?

Its ok on Google Chrome on MacOS

its broken on Safari on iPad
its broken on safari on MacOS

ok thanks maybe @Fedik can have a look at this?

same with php 7.x.x ?

I confirm issue with php 7.3.9 Safari Version 12.1.2 (12607.3.10)

We have a style="display: none;" in the select.

Without it we get

But it is working fine when using the images xtd...

I do not have a safari, cannot check, sorry,

We have a style="display: none;" in the select.

Hm, does it use Choosen.js ? Maybe after some safari update that broke this lib.

After multiple tests and trying to modify through console the scss, or quitting Safari, killing session, result tests are not clear. I sometimes get a correct display, sometimes not. Confused...

@Fedik
Screenshots

yea, it is Choosen.js, hm hm
I suspect it cannot calculate correct size on safari, or something

in theory same issue should be in all j3.x.x in safari, because we do not change anything in j3.9.24 for this view

@infograf768 to disable choose, just remove this line :)

Well, not so nice for other browsers.

for both xtd and media field

Safari after change

Firefox BEFORE change

Firefox AFTER change

Chrome after change

Well, not so nice for other browsers.

yeah, I agree

maybe @dgrammatiko can have a look, he have safari :)

in theory same issue should be in all j3.x.x in safari, because we do not change anything in j3.9.24 for this view

Well, it's not the case for 3.9.23 as I already tested it there. For the RC I have to setup a local env (new PC here) and it will take some time

Sorry it seems I can't replicate it either with the latest Safari or Safari Technology Preview on Big Sur

Please clean your cache and clear the history then try again (it might be a hiccup on some css file)

I replicated it on my iPad and on my iMac, independently...

If no one else can replicate it then no bother.

@PhilETaylor you don't have to close it as it could be a legitimate bug. I just d/l the RC and couldn't replicate it. Maybe it needs some specific criteria?

Im going to the kids bedroom to use her iMac... its never had Joomla installed. Fingers crossed.

Im guessing a width of 2px is not correct...

That should be 220px

Broken on Firefox on macOS

Its a PHP 8 issue. wow...

As soon as I run it in PHP 7.4/7.3/7.2 it works fine...

@PhilETaylor I'm also on PHP 8.0 here

try running it with the command line php server

php -S 0.0.0.0:80

I can replicate it every time in Firefox and Safari when using that with PHP 8.0.2-dev - but still confused why this is a PHP issue.

In fact I lie, my command line is not docker, so its running stable released 8.0.0 and not any funky 8.0.2-dev which I use in docker.

100% replicate-able now, using php -S 0.0.0.0:80 development server with brew installed php 8.0.0

Can you try something:
https://github.com/joomla/joomla-cms/blob/staging/layouts/joomla/html/formbehavior/chosen.php
change to

$options_str =  "";

*change line 29 to

Slightly different as the search icon is brought back on screen

@PhilETaylor you might want to step into

I can no longer replicate this on any browser with staging today. If someone else that used to be able to confirm this, can also see its working today then we can just ignore this issue and close this.