评分4星，满分5星

由 ulf3000 发表于 Aug. 4, 2016 ·

lately the html5 video player controlls are gone until you once disable the addon , play a video and then enable it again.

对这个附加组件，此用户曾发表过1个评价。

作者 Desktopd Collaboration (开发者) 日期 Aug. 5, 2016 ·

You might want to look at https://discourse.mozilla-community.org/t/how-to-determine-the-mime-type-of-the-loading-document-in-a-content-policy/9917?u=desktopd