[BUG] Drag and drop upload broken after update to v28 #389

---
version: "2.1"
services:
  nextcloud:
    image: lscr.io/linuxserver/nextcloud:latest
    container_name: Nextcloud
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Europe/London
    volumes:
      - /srv/dockerdata/nextcloud_data/config:/config
      - /srv/dockerdata/nextcloud_data/data:/data
    ports:
      - 445:443
    restart: unless-stopped

using keys found in /config/keys
Initializing nextcloud 28.0.0.11 (this can take a while) ...
Upgrading nextcloud from 27.1.4.1 ...
Setting permissions
Nextcloud or one of the apps require upgrade - only a limited number of commands are available
You may use your browser or the occ upgrade command to do the upgrade
Setting log level to debug
Turned on maintenance mode
Updating database schema
Updated database
Disabled incompatible app: files_rightclick
Updating <federation> ...
Updated <federation> to 1.18.0
Updating <lookup_server_connector> ...
Updated <lookup_server_connector> to 1.16.0
Updating <oauth2> ...
Updated <oauth2> to 1.16.3
Updating <password_policy> ...
Updated <password_policy> to 1.18.0
Updating <photos> ...
Updated <photos> to 2.4.0
Updating <files> ...
Updated <files> to 2.0.0
Updating <activity> ...
Updated <activity> to 2.20.0
Updating <cloud_federation_api> ...
Updated <cloud_federation_api> to 1.11.0
Updating <dav> ...
Fix broken values of calendar objects
 Starting ...
Clean up old calendar subscriptions from deleted users that were not cleaned-up
    0/0 [>---------------------------]   0% Starting ...
Updated <dav> to 1.29.1
Updating <files_sharing> ...
Updated <files_sharing> to 1.20.0
Updating <files_trashbin> ...
Updated <files_trashbin> to 1.18.0
Updating <files_versions> ...
Updated <files_versions> to 1.21.0
Updating <sharebymail> ...
Updated <sharebymail> to 1.18.0
Updating <workflowengine> ...
Updated <workflowengine> to 2.10.0
Updating <comments> ...
Updated <comments> to 1.18.0
Updating <notifications> ...
Updated <notifications> to 2.16.0
Updating <systemtags> ...
Updated <systemtags> to 1.18.0
Updating <theming> ...
Migrate old user accessibility config
    0/0 [->--------------------------]   0% Starting ...
Updated <theming> to 2.3.0
Updating <bruteforcesettings> ...
Updated <bruteforcesettings> to 2.8.0
Updating <contactsinteraction> ...
Updated <contactsinteraction> to 1.9.0
Updating <federatedfilesharing> ...
Updated <federatedfilesharing> to 1.18.0
Updating <files_pdfviewer> ...
Updated <files_pdfviewer> to 2.9.0
Updating <files_reminders> ...
Updated <files_reminders> to 1.1.0
Updating <logreader> ...
Updated <logreader> to 2.13.0
Updating <privacy> ...
Updated <privacy> to 1.12.0
Updating <provisioning_api> ...
Updated <provisioning_api> to 1.18.0
Updating <recommendations> ...
Updated <recommendations> to 2.0.0
Updating <related_resources> ...
Updated <related_resources> to 1.3.0
Updating <serverinfo> ...
Updated <serverinfo> to 1.18.0
Updating <settings> ...
Updated <settings> to 1.10.0
Updating <text> ...
Updated <text> to 3.9.1
Updating <twofactor_backupcodes> ...
Updated <twofactor_backupcodes> to 1.17.0
Updating <user_status> ...
Updated <user_status> to 1.8.1
Updating <viewer> ...
Updated <viewer> to 2.2.0
Starting code integrity check...
Finished code integrity check
Update successful
Turned off maintenance mode
Resetting log level
Initializing finished
[custom-init] No custom files found, skipping...
[ls.io-init] done.