Diamond garbled characters appear after opening some simplified Chinese emails

[zhanying233]

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

K-9 Mail

App version

8.0

Where did you get the app from?

Google Play

Android version

8.1.0

Device model

No response

Steps to reproduce

It's a great client, but there is a small bug. Some emails may have encoding problems, resulting in all Chinese characters being "�����". It's a diamond with a question mark inside. I searched through the entire software settings but couldn't find the encoding setting. I hope this bug can be fixed. Thank you very much!

Expected behavior

Open and decode the file normally

Actual behavior

It looks like there is a problem with the decoding of simplified Chinese

Logs

No response