Does not play encrypted HLS playlist where KEY URI is a Data URI

Basically it does not play an encrypted HLS playlist where the key for each segment is listed in playlist in the form of Data URI, like this #EXT-X-KEY:METHOD=AES-128,URI="data:application/octet-stream;base64,xtfhsRCnE3+t2bVKn+gLEQ==",IV=0x50f881b1f9598945878e60ccb139bb9c

This should be valid.