Cannot get an email with Microsoft Graph API due to encoding conversion failure on Microsoft side

Question

Trying to get with Microsoft Graph API an email but get an error from Microsoft side:

Request: GET https://graph.microsoft.com/v1.0/Users/user_id/messages/message_id; Request body size: 0; ReplyBodyError: { ErrorCode: "ErrorInternalServerError", ErrorMessage: "An internal server error occurred. The operation failed., Microsoft.Exchange.Data.Globalization.Iso2022Jp.DecodeJisX0208_1983ToCp932.GetNextRun output length 240 does not match ConvertToCp932 length 239" }

I am not sure, is it possible or not provide such email since it's confidential email from our customer. It's not a single case - we have 7 emails with the same error.

So I have several questions:

1. What is the reason of the problem?
2. Is it now possible to download such emails with Microsoft Graph API? With EWS API?
3. Is it known issue? If yes - is there any estimations for fix?

Thank you.