Connection lost when connecting to server

When attempting to connect to a 14w28a server, the client is disconnected and is shown the following message:

Connection Lost

Internal Exception: io.netty.handler.codec.DecoderException: java.lang.IndexOutOfBoundsException: readerIndex(1389927) + length(135424) exceeds writerIndex(1477223): UnpooledHeapByteBuf(ridx: 1389927, widx : 1477223, cap: 1477223/1477223)

The server logs the following message:

[11:56:18 INFO]: Guy lost connection: TranslatableComponent{key='disconnect.genericReason', args=[Internal Exception: java.io.IOException: An established connection was aborted by the software in your host machine], siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}