onlyoffice sheet tab driven out of viewport by recovery-email-banner

• Impacted Application: murena.iooffice

The problem

Since the recovery-email-banner was introduced, the bottom sheet-tabs in onlyoffice calc documents is hidden / out of view.

(Nextclouds default public share theme also hides the sheet tabs, though I'd see the banner central to this issue)

Steps to reproduce

Try to navigate to the bottom sheet tab on any onlyoffice calc document. There's no alternative UI to access it either.

Technical details

two users reported this:

• https://community.e.foundation/t/murena-cloud-keine-blattregister-in-spreadsheet-von-openoffice/67856 (german language, contains the css hint where the nextcloud issue is located at too)
• https://community.e.foundation/t/banner-blocks-bottom-tool-bar-on-murena-workspace-desktop/69019

as the banner is fixed to the top, the reference hight changes and moves the sheet tabs out of view.

Workarounds

ublock rules:

murena.io##.recovery-email-banner
murena.io###body-public:style(--footer-height: 0 !important;)

Solutions

1. introduce a javascript close button that removes the parent div (and a cookie to remember?)
2. or adjust total height of onlyoffice to take banner into account