再生中動画情報がキャッシュから読み込まれた場合に情報が反映されない

[sk ☃#QQ]

報告: https://groups.google.com/d/topic/mnmn-forum/xoYQy5kNlqI/discussion 関連: #748

---

Software: MnMn
Version: 0.84.1.25298-551f36ba2c5cc71a2d9686d43721477072d2dc4a
BuildType: RELEASE
Platform: 64
OS: Microsoft Windows NT 10.0.15063.0
CLR: 4.0.30319.42000
Lightweight: 0001-01-01 00:00:00Z

[sk ☃#QQ]

resolved #755

→ <<cset 3641535575a0>>