Hi
This problem occurs when using Chinese.
ShouldAudosize seems do not working right with Chinese.
Expected behavior:

Actual behavior:

You could try to set the autosize method to exact:
\PhpOffice\PhpSpreadsheet\Shared\Font::setAutoSizeMethod(Font::AUTOSIZE_METHOD_EXACT)
If that doesn't help, you might need to ask help in PhpSpreadsheet.
Sad,I have a same problem ……
@patrickbrouwers where to add that ? or how to use it ?
Service provider is fine
When I set it to Font::AUTOSIZE_METHOD_EXACT, but I cannot find TrueType Font file not found. Failed to generate template: TrueType Font file not found
Most helpful comment
You could try to set the autosize method to exact:
If that doesn't help, you might need to ask help in PhpSpreadsheet.