After upgrade disable/enable 2fa generates a new code

[wahlis]

Steps to reproduce

1. Upgrade to 11.0.1
2. Log in after session timout

Expected behaviour

After entering code I should be able to login

Actual behaviour

TOTP (Google Authenticator) Swedish error message "Fel vid verifiering av tvåfaktorsautentisering."
New prompt to add Authentication code

After using a backup code I was able to login. Disabling 2fa let me login again. When I re-enable it a new key is generated.

This behaviour was not before the upgrade. I have had some issues with OPDS not working with app passwords so I have disabled and the re-enabled 2fa several times before.

Server configuration

Operating system:
Ubuntu 16.04.1 LTS

Web server:
Apache 2.4.18

Database:
mysql-server-core-5.7.16

PHP version:
7.0.13

Nextcloud version: (see Nextcloud admin page)
11.0.1

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

[nickvergessen]

@ChristophWurst

[ChristophWurst]

@wahlis could you please open an issue at https://github.com/nextcloud/twofactor_totp/issues/new (just copy the text from above into a new issue). If you have anything related to this issue in the logs please provide your log entries too. I will have a look then. Thanks!