Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Mozilla サポートの検索

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

YouTube won't enter full screen mode in Firefox

  • 1 件の返信
  • 1 人がこの問題に困っています
  • 20 回表示
  • 最後の返信者: guigs

more options

A day or two ago, I was watching a YouTube video in Firefox. I hit the full screen button on the YT player and the player entered full screen mode. My browser asked me if I would like to allow YT to enter full screen mode, I clicked allow. Ever since, whenever I click the full screen button on any YT player/video, nothing happens.

I do not have this issue in Chrome, I've tried clearing my online and offline cache, and I don't seem to have this issue with other video players in Firefox.

Any help would be great. Thanks.

A day or two ago, I was watching a YouTube video in Firefox. I hit the full screen button on the YT player and the player entered full screen mode. My browser asked me if I would like to allow YT to enter full screen mode, I clicked allow. Ever since, whenever I click the full screen button on any YT player/video, nothing happens. I do not have this issue in Chrome, I've tried clearing my online and offline cache, and I don't seem to have this issue with other video players in Firefox. Any help would be great. Thanks.

すべての返信 (1)

more options

Does this still happen in version 36 after today's update?