Please make sure to finish all your posts before this time. The downtime should only last for a few minutes.
As of 42.0.2392.0, the Web Panel sidebar extension no longer works for Facebook or Twitter
The title of this thread says it all. The previous version of Opera Developer before Opera Developer 42.0.2392.0 worked fine with respect to the Web Panel (sidebar) extension for viewing Twitter and Facebook in the sidebar. I use https://m.facebook.com and https://mobile.twitter.com for this extension.