E-mail to users has invisible password reset button and link to shared document (cause color is taken from Admin > Themes > Color ..)

[cornouws]

Steps to reproduce

1. Enter user name, wrong PW, click LogIn .. Click to reset password
2. In the mail "Click the next button to.." the button is not visible
   Mouse over does show a clickable object + link in the status bar

Expected behaviour

The promised button should be visible.

Actual behaviour

There is no visible button.
Noticed in Zimbra on CentOS with KDE and in Thunderbird on Ubuntu.

Server configuration

Nextcloud version: (see Nextcloud admin page)
Nextcloud 12.0.2

Updated from an older Nextcloud/ownCloud or fresh install:
Updated

Client configuration

Firefox

Operating system:
CentOS / Unbuntu

[cornouws]

[cornouws]

The problem still exists in version 12.04

[cornouws]

Ah, right. The button color is precisely what is set in Admin > Themes > Color.
Which was #FFFFFF in our case :p

[cornouws]

Logic would be an enhancement to have a separate setting for the button color, I think.