Due to the recent Youtube layout changes, I was having trouble with the chat replays being displayed on the right side of the video and reducing the video screen size when playing LIVE streaming archived videos in theater mode, and then I found this add-on!

This add-on is very useful because it allows me to maximize the screen size of the video window without having to turn off the chat replay.
(Because turning off the chat replay function disables the “YouTube LiveChat Flusher” add-on, which I want to use at the same time.)

Unfortunately, with the version 4.0 update, the chat replay is now displayed to the right of the video and the video is not window maximized.
I would love to see this add-on become even better if the display method could be reverted back to the way it was before or if it could be made an option to choose how it is displayed.

I have now downgraded to version 3.9 and am using it.