ffmpeg converting from 25p to 50i issues

Question

We try convert 25P mp4 file to interlace 50i, but if we try extract sound he shifted forward to 1 frame and cut to end for 1 frame and If I've try export audio via VLC CLI and have normal duration. . if we try convert video we lose 1 frame of duration.

ffmpeg -i in25p.mp4 -pix_fmt yuv420p -c:v libx264 -flags +ilme+ildct -x264opts tff=1 out50i.mp4

We see this in the Adobe Premiere Pro CC 2017

 General
    Format/String                    : MPEG-4
    Format_Profile                   : Base Media / Version 2
    CodecID/String                   : mp42 (mp42/mp41)
    FileSize/String                  : 594 MiB
    Duration/String                  : 5 min 30 s
    OverallBitRate_Mode/String       : Variable
    OverallBitRate/String            : 15.1 Mb/s
    TIM                              : 00:00:00:00
    TSC                              : 25
    TSZ                              : 1

    Video
    ID/String                        : 1
    Format/String                    : AVC
    Format/Info                      : Advanced Video Codec
    Format_Profile                   : Main@L4.1
    Format_Settings                  : CABAC / 4 Ref Frames
    Format_Settings_CABAC/String     : Yes
    Format_Settings_RefFrames/String : 4 frames
    CodecID                          : avc1
    CodecID/Info                     : Advanced Video Coding
    Duration/String                  : 5 min 30 s
    BitRate/String                   : 14.5 Mb/s
    Width/String                     : 1 920 pixels
    Height/String                    : 1 080 pixels
    DisplayAspectRatio/String        : 16:9
    FrameRate_Mode/String            : Constant
    FrameRate/String                 : 25.000 FPS
    ColorSpace                       : YUV
    ChromaSubsampling/String         : 4:2:0
    BitDepth/String                  : 8 bits
    ScanType/String                  : Progressive
    Bits-(Pixel*Frame)               : 0.279
    StreamSize/String                : 569 MiB (96%)
    Language/String                  : English
    colour_range                     : Limited
    colour_primaries                 : BT.709
    transfer_characteristics         : BT.709
    matrix_coefficients              : BT.709
    Codec configuration box          : avcC

    Audio
    ID/String                        : 2
    Format/String                    : AAC LC
    Format/Info                      : Advanced Audio Codec Low Complexity
    CodecID                          : mp4a-40-2
    Duration/String                  : 5 min 30 s
    Source_Duration/String           : 5 min 30 s
    BitRate_Mode/String              : Variable
    BitRate/String                   : 317 kb/s
    BitRate_Maximum/String           : 402 kb/s
    Channel(s)/String                : 2 channels
    ChannelLayout                    : L R
    SamplingRate/String              : 48.0 kHz
    FrameRate/String                 : 46.875 FPS (1024 SPF)
    Compression_Mode/String          : Lossy
    StreamSize/String                : 12.5 MiB (2%)
    Source_StreamSize/String         : 12.5 MiB (2%)
    Language/String                  : English