Proof comment tools not working

Our users are reporting broken functionality inside Workfront’s ProofHQ tools. It also appears the UI has changed slightly, so we suspect there may have been some sort of recent release? I couldn’t find anything conclusive in the release log. 

Please see screenshot below for a detailed report, but essentially the text selection tools are no longer populating text, line breaks aren’t being respected, and the “edit” button erases all content. We’ve also had users unable to save copy/pasted text. 

Insights are much appreciated. Thanks!