The MB web interface has an action accessed by My Data -> Edits for Subscribed Entities that shows the open edits for any entity eg. artist or label that the editor has subscribed to. Until recently, this page was the same as other open edit pages in that there was information and controls on the right showing how you've edited and allowing a vote to be made or changed.

Recently (perhaps since the last server update?), those edit controls no longer appear. They show up on other edit pages, just not on this particular one.

The bug seems specific to the Chrome browser (or Chromium), and also to Internet Explorer. I don't see the issue in Mozilla Firefox.

Chrome version (Ubuntu 14.04) : Version 40.0.2214.91 (64-bit)
Chromium version (Ubuntu 14.04) : 39.0.2171.65 Ubuntu 14.04 (64-bit)
Chrome version (Windows 7) : Version 40.0.2214.93 m
Internet Explorer version (Windows 7): 111.0.9600.17501