Here is the short instructions and extract based on @luckow findings:

On Web GUI:

• go the app
• click terminal

Now on the terminal:

echo ${CLOUDRON_MYSQL_DATABASE} # note the output - it's 35629ca3ac8992ec in my case
mysql --user=${CLOUDRON_MYSQL_USERNAME} --password=${CLOUDRON_MYSQL_PASSWORD} --host=${CLOUDRON_MYSQL_HOST} ${CLOUDRON_MYSQL_DATABASE}

Now starts making database voddoo - make sure you have database backup first.

SELECT * FROM information_schema.SCHEMATA WHERE schema_name = "35629ca3ac8992ec";
SELECT CONCAT('ALTER TABLE `', TABLE_NAME,'` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;')   
    AS CharSetConvert
    FROM INFORMATION_SCHEMA.TABLES
    WHERE TABLE_SCHEMA="35629ca3ac8992ec"
    AND TABLE_TYPE="BASE TABLE";
ALTER DATABASE `35629ca3ac8992ec` CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
SET foreign_key_checks = 0;
/* execute all queries from CharSetConvert output earlier here */
ALTER TABLE `__diesel_schema_migrations` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `attachments` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `ciphers` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `ciphers_collections` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `collections` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `collections_groups` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `devices` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `emergency_access` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `event` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `favorites` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `folders` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `folders_ciphers` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `groups` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `groups_users` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `invitations` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `org_policies` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `organizations` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `sends` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `twofactor` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `twofactor_incomplete` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `users` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `users_collections` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
ALTER TABLE `users_organizations` CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_0900_ai_ci;
SET foreign_key_checks = 1; /* verify CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci is on the place */

Now restart the app (via big button at the top of the terminal).

@girish , guess Vaultwarden 1.27.0 is a braking change and/or the patch before updating is required (as per above).

@jayonrails this is only on older instances

...and only on some of them. I never hit this issue myself.

My instance went through the restore indeed.

@LoudLemur said in no password when update to 1.11.0:

@JOduMonT You might consider trying one of the following tools for screenshotting and using their masking/pixelating/painting options:

Flameshot
ShareX (which works with XbackBone

why you don't like my style
I'm using the Mac of My wife via a hotspot
Still have issue with my Internet at Home so I don't have access to my Desktop.

HAha! JOduMonT - you have GREAT style!

@JOduMonT You might consider trying one of the following tools for screenshotting and using their masking/pixelating/painting options:

Flameshot
ShareX (which works with XbackBone

why you don't like my style
I'm using the Mac of My wife via a hotspot
Still have issue with my Internet at Home so I don't have access to my Desktop.

• Flameshot
• ShareX (which works with XbackBone

Ubuntu: 22.04 LTS @Hetzner
Cloudron: v7.3.4 (Ubuntu 22.04.1 LTS)

I have password

with the bitwarden icon
App: Vaultwarden 1.26.0
Package: com.github.bitwardenrs@1.10.2

I don't have password and sync fail

with the vaultwarden icon
Application: Vaultwarden 1.27.0
Package: com.github.bitwardenrs@1.11.0

screenshots

Old school screenshots
Before update: https://ibb.co/0BNyck3
Update: https://ibb.co/3dD9P5c
After update: https://ibb.co/9bCS731
Restore backup = everything is back

I'm still not at all clear what the actual issue(s) people are facing is, but so far I've not noticed anything wrong with my Vaultwarden (on the latest Cloudron versions, which it sounds like everyone having issues also is).

with 1.26.0 I have password
while with 1.27.0 I don't have password

PASSWORD + SYNC OK

App Title and VersionVaultwarden 1.26.0
App ID4584d250-1515-4380-be5b-87a4ab3cd92d
Package Repositorycore
Package Versioncom.github.bitwardenrs@1.10.2
Last Updated4 days ago

sorry for your eyes; my internet is too bad right now for uploading screenshot

NO PASSWORD + SYNC FAIL

App Title and VersionVaultwarden 1.27.0
App ID4584d250-1515-4380-be5b-87a4ab3cd92d
Package Repositorycore
Package Versioncom.github.bitwardenrs@1.11.0
Last Updated2 minutes ago

do you use a browser plugin?

password disappears after updating via the browser (webapp) and the app in the browser (plugin) and in my androids don't sync anymore

do you have an organization?

NO

do you store the password only in the organization?

NO

is the organization and the number of passwords displayed in vaultwarden.example.org/admin? (no idea how to get access to /admin => https://docs.cloudron.io/apps/vaultwarden/)

NO

my Cloudron is update to date on an Ubuntu 20.04LTS; no change or weird configuration as been done.

Might be just some random bug...

@potemkin_ai I wonder why I seemingly haven't hit this issue though

Me neither. My instance is 4-5 years old including Ubuntu migrations from 18.04 -> 20.04 -> 22.04, had Bitwarden since the beginning incl. organizations.

I'm also on Ubuntu 20.04.5 LTS, you?