Error with the wallpaper

I put a photo in the wallpaper of the Nextcloud home (login image), in 1920x1080 resolution.
The image is displayed correctly on the home page, no problem.
However, I have a problem on the document sharing page, when I secure the shared document with a password.
I find this image, but very small and multiplied (see attached).
Do you have the problem and do you know how to fix it?
I specify that I am in version 20.
Thank you in advance.

I use in Nextcloud 20 random images with the app Splash. That works fine but not with a shared link with password. The random picture is loaded (network analysis in Firefox) but not shown.


I think there is a bug with sharing with password.
Please create an Issue