Firefox issue with placeholder

[GretaD]

Steps to reproduce

1. Go to calendar app and create an event
2. See the description box being to small to fix the palceholder text

Expected behavior

The placeholder text fits the field

Actual behavior

Calendar app version

Version 5.1.0-alpha.1

CalDAV-clients used

No response

Browser

FF

Client operating system

No response

Server operating system

No response

Web server

None

Database engine version

None

PHP engine version

None

Nextcloud version

No response

Updated from an older installed version or fresh install

None

List of activated apps

Nextcloud configuration

Web server error log

Log file

Browser log

Additional info

The height is defined via v-autosize directive, which disables fixed height for a moment and then textarea is supposed to have height automatically. But it doesn't work in Firefox. Thats is a known issue for autozise as described here: jackmoore/autosize#338

Not sure how we should approach this.