Problem with Drag'n'Drop option

Nextcloud version : 16.0.3
Operating system and version : OS Debian 9
Apache or nginx version: Apache/2.4.25
PHP version _(eg, 7.1): PHP 7.3.8-1+0~20190807.43+debian9~1.gbp7731bf

The issue you are facing:

Hello support and very congratulation for this beautiful platform.

I installed NC on a Debian machine, configuring it with everything necessary.
The only problem I find concerns Drag’n’Drop:
When I send a link to a file to a person, it only manages to drag files and folders to the “upper” part of the loading screen and not to the lower part (so to speak under the word “There is no file here”).
You can upload to this folder)
If the folder or files are dragged to the “low” part, they are not even loaded.
Is there a way to also enable the remaining part of the screen in question?

I hope I was clear in the explanation and thanks in advance for the help

the problem only happens with sharing via a public link, not with private account.

Is this the first time you’ve seen this error? Y