Will the Xbox get the new edge?

No, there is no new Edge browser for Xbox One yet. There has been no news on if or when there will be a new version of Edge available for the console.

Can you create a new tab in Microsoft Edge and get to Facebook after you see the issue?

support.xbox.com/.../how-to-close-malicious-tabs-microsoft-edge

Don't worry Xbox is rolling out the new Chromium-Based version of Edge to Xbox insiders so, it's not too long until Edge works faster.

Are you having trouble viewing content in your browser on Xbox One? And are you comparing settings against the new Edge on a PC to Xbox One? I don't believe they have updated Xbox One's browser to the new Edge yet.

Because of how Microsoft Edge on Xbox has limited memory available to it, this causes the tab to get automatically discarded almost immediately or in a few seconds even if that tab was using less memory. I also discovered a bug in Microsoft Edge that caused my profile to reset when I was closing and restarting Microsoft Edge. I got a message saying my profile had a problem loading, and Microsoft Edge closed shortly afterward. I reopened Microsoft Edge only to get the welcome to the new Microsoft Edge screen to discover that I was logged out of my accounts when the problem happened. It scared me to think that someone had hacked my account.