Please see attachments.
Since the last update the following has occurred a couple of times and requires a restart or I just discovered another way to get the library rendering back without a restart:
Help>System Info (no content displayed) then Help>About brings the content back into view. Guessing the Help>About being a popup is refreshing the display in background. Last image is the evidence I actually have Albums in my library.
There are no filters applied in any view. The problem is random so far as I can notice.
Media Center
Version: 29.0.28 Registered
Install path: C:\Program Files\J River\Media Center 29\
Interface plug-ins: Interface Plugins: TiVo Server (disabled, not running)
JRMark: 5741 (version 27.0.85)
Program run time: 25.8 hours
Memory used: 81.6 MB memory
Handles used: 920 handles