Deleted channel messages can still be searched

Hello, I have encountered a problem in the process of using it, and I hope to get your help. After deleting the historical messages of a channel, I can still search for these deleted messages

Hi @loser9509,

Could you please let us know more details? How did you delete messages and search messages?
by SDK or by Dashboard or Platform API?

Using the SDK。
Clear the chat history in a group channel:

Search messages by a keyword:

There is also the problem of not being able to find Chinese messages in the SDK.

Hi @loser9509. We seem to have internal attributes to enable searching messages with message offset. Could you please let us know your app_id via a dashboard support ticket or message by the community? I will enable it for you.

Can you give us more examples and details regarding Chinese messages?