Collabora Online - html/css error

[ReinerNippes]

Steps to reproduce

1. Install Nextcloud & Collabora Online
2. Open a document

Actual behaviour

Server configuration

curl -s https://raw.githubusercontent.com/ReinerNippes/nextcloud13/devel/prepare_system.sh | /bin/bash
HOME=/root ansible-pull --clean --force --checkout devel -d /root/nextcloud -i 'nextcloud' -U https://github.com/ReinerNippes/nextcloud13.git nextcloud.yml -e "dhparam_numbits=1024" -e "fqdn=$(hostname -f)" -e "ssl_certificate_type=selfsigned"

Update to Beta14

[nextcloud-bot]

GitMate.io thinks possibly related issues are #9486 (Collabora Online,edit error), #8771 (css: collabora: top menu not hidden correctly), #6804 (No error message when trying to save a locked document from a SMB external storage with Collabora Online), #1570 (Unable to download Collabora Online Connector), and #9103 (Versions - Shared Folder - Collabora Online Problem).

[rullzer]

Should be fixed with #10483