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Renaming a Telegram bot's @username in BotFather silently stopped the
gateway from answering in groups.
PTB caches getMe() in Bot._bot_user and only rewrites it inside get_me(),
so after a rename the adapter kept comparing mentions against the OLD
handle. The exclusive-mention gate then saw the new @handle, failed to
match itself, and concluded the message was addressed to a different bot
— dropping it before the reply and wake-word fallbacks could run. Native
replies to the bot were discarded too. Polling mode recovered on the next
90s heartbeat; webhook mode never calls get_me() again, so it stayed dead
until restart.
Separately, the bot-handle pattern assumed every bot username ends in
"bot". Collectible (Fragment) usernames can be assigned to bots and drop
that suffix (@jarvis, @pic), so such a bot could not recognise its own
handle in the entity-less fallback and was suppressed by any message that
also named another bot.
- Route every mention comparison through _current_bot_username(), which
prefers the last observed handle over PTB's cache.
- Learn the live handle from inbound updates: Telegram stamps the current
username on our own messages and on reply_to_message. Guarded by user
id, so another account's handle is never adopted.
- Re-check identity out of band (TTL-bounded, one getMe per 5 min) when
the exclusive gate is about to drop a message — the exact stale-handle
symptom — so the mistake self-corrects instead of persisting.
- Refresh identity in webhook mode via a dedicated low-frequency loop,
cancelled on the same teardown fence as the heartbeat.
- Match our own handle by identity rather than shape. Foreign handles keep
the deliberate "...bot" narrowing so human @handles still never act as
routing hints (the intent behind
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| .. | ||
| _category_.json | ||
| bluebubbles.md | ||
| dingtalk.md | ||
| discord.md | ||
| email.md | ||
| feishu.md | ||
| google_chat.md | ||
| homeassistant.md | ||
| index.md | ||
| irc.md | ||
| line.md | ||
| matrix.md | ||
| mattermost.md | ||
| msgraph-webhook.md | ||
| ntfy.md | ||
| open-webui.md | ||
| photon.md | ||
| qqbot.md | ||
| raft.md | ||
| signal.md | ||
| simplex.md | ||
| slack.md | ||
| sms.md | ||
| teams-meetings.md | ||
| teams.md | ||
| telegram.md | ||
| webhooks.md | ||
| wecom-callback.md | ||
| wecom.md | ||
| weixin.md | ||
| whatsapp-cloud.md | ||
| whatsapp.md | ||
| yuanbao.md | ||