Problem with fetching some letters: Syntax error in BODY. Unexpected token: ')'

[sq5]

Mailkit Version 4.3.0, mail server - Yandex

Error:

Exception has occurred: CLR/MailKit.Net.Imap.ImapProtocolException
Exception thrown: 'MailKit.Net.Imap.ImapProtocolException' in System.Private.CoreLib.dll: 'Syntax error in BODY. Unexpected token: ')''
at MailKit.Net.Imap.ImapFolder.d__213.MoveNext()
at MailKit.Net.Imap.ImapEngine.d__189.MoveNext()
at MailKit.Net.Imap.ImapCommand.d__84.MoveNext()
at MailKit.Net.Imap.ImapEngine.d__190.MoveNext()
at MailKit.Net.Imap.ImapEngine.d__191.MoveNext()
at MailKit.Net.Imap.ImapFolder.d__237.MoveNext()
at MailKit.Net.Imap.ImapFolder.GetBodyPart(UniqueId uid, String partSpecifier, CancellationToken cancellationToken, ITransferProgress progress)
at MailKit.Net.Imap.ImapFolder.GetBodyPart(UniqueId uid, BodyPart part, CancellationToken cancellationToken, ITransferProgress progress)

[jstedfast]

Lets keep this in the bug reports section.