Bug#898575: In-memory cache grows almost without bound

[debian-edid]

The same with mpv 0.32 playing flac stream from online radio
Config:
        cache=no
        demuxer-max-back-bytes=100KiB
        demuxer-max-bytes=2MiB

Ram usage constantly growing (last seen as much as 700MB and cpu usage 
is growing with memory). Memory leak ?