From a programmatic perspective, specifically how are widgets and other display-constituents represented in the display-area (i.e. HTML5, proprietary framework, Android / iOS SDKs)?
It's awful. I have to re-login constantly. The notifications bell drop-down doesn't work anymore. There's no good way to view the newest posts. The formatting is annoying, injecting styling for which I never asked and do no want. I could go on.