Display name changes from telegram contact name to telegram username

[reformedp]

I am self-hosting a matrix server to bridge different platforms, I am the only user on the platform. This issue has occurred with more than one of the bridged chats, long after the chat has been created on matrix.

[telegram name as saved in contact book] (Telegram) changed their display name to [name registered with telegram] (Telegram)

For example:

Dad (Telegram) changed their display name to John Doe (Telegram)

This problem occurs randomly as far as I can tell. I have used the default settings for the display name config.

Separately, I have tried to use set-displayname command as a workaround, but I have gotten the

That command is limited to bridge administrators.

message. How do I set myself as a bridge adminstrator?

Thank you.

[tulir]

That's the expected behavior unless it's changing the name back and forth.

Bridge permissions are located in the config: https://github.com/mautrix/telegram/blob/v0.11.3/mautrix_telegram/example-config.yaml#L404-L419

[reformedp]

Does that mean the display names in element are unable to follow the phone and telegram contact book? That would be my preferred display name for my contacts.

[tulir]

Option to use contact names was added recently (only for single-user instances, trying to use it on multi-user instances will cause names to flip back and forth)