Hi @UtauyoNASE
To troubleshoot your issue, I have some questions to confirm with you:
1)Does this issue persist all the time?
2)Are you using Classic Teams or New Teams client?
In this case, we firstly recommend you try to use Teams web client to see if it can be reproduced. If there is no issue in Teams web client, you could try to clear Teams client cache file to see if it works. In this article, it provides the way you could do when using New Teams client or Classic Teams.
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