Does Netflix use the Flash player?

Often if you interact with a media plugin, the plugin will continue to capture your keyboard input until you click outside of the plugin. If the media auto-plays, this normally is not an issue until you interact with the control.

There is a known issue on YouTube where the YouTube player may continue to capture keyboard input after you click one of the control buttons (e.g., pause, play, volume), even after you click in the page outside the player.

I haven't reviewed the threads on the YouTube issue recently to discover whether there is a solution, but one workaround was to use a Windows-level hotkey, such as Alt+Tab twice in succession (switches to next window, then switches back), to break the grip of the plugin.

I think that Netflix uses Silverlight and not Flash

Current Firefox versions aren't processing key presses if a plugin has focus (the focused plugin is expected to process them).
So if a plugin has focus then you need to click with the mouse outside the plugin to make keyboard shortcuts work.

• bug 93149 - No way to move focus between plugin and browser from keyboard

(please do not comment in bug reports: https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)