Found the toolbar (didn't know it exist ;) )

Can not reproduce : it work without any issue for me.
Maybe related to server config ?

Can not reproduce : it work without any issue for me.
Maybe related to server config ?

Can be. What OS / Distribution you are using?

A user here noticed this on 5.4.11+221114 running on RHEL 8, but it has a self-made SB authentication module. Hence I did another test with a fresh install of newest version on Debian 11 and the same error happened.

Debian 11 with PHP74 on apache
Tested too on my local install with nginx.

but it has a self-made SB authentication module

Maybe something here.

debug and log ?

To clarify: My Debian 11 test installation has no SB module.

I'll try to spot the exact conditions for the bug later.

If it is OK I will set the status to feedback until more info is added. Thanks!

I just installed Ubuntu 20.04 LTS on a virtual machine and downloaded & installed version 5.4.15+221212 on LS. The bug is here.

But what is kcat-link? Now when I go to resources on the new installation I got a links "kcat:upload", "kcat:refresh" etc. Something strange here.

JS file broken, try to reset assets,
If it don't work : give all right to www-data inside tmp/ (and upload)

JS file broken, try to reset assets,

In a brand new installation? As you wish... did not make any difference.

If it don't work : give all right to www-data inside tmp/ (and upload)

I did this test install with chmod a+rwX just to make sure that permissions are not an issue.

kcat:* are the link managed with JS by kcdinfer.
Always …

Then : look at console ?

Console shows quite much, like

Uncaught TypeError: $(...).get(...) is undefined
initSettings http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2711
init http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2115
<anonymous> http://127.0.0.1:8888/limesurvey/third_party/kcfinder/browse.php?language='en':34
e http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
t http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
setTimeout handler*Deferred/then/l/< http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
c http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
fireWith http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
fire http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
c http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
fireWith http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
ready http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2
B http://127.0.0.1:8888/limesurvey/third_party/kcfinder/js/index.php:2

but I don't know what to look for.

(:8888 comes from the port forwarding I used to connect VirtualBox vmachine.)

Can not help