Well well well........
I got through to Logitech and spoke to a very helpful guy. He did some research and called me back with a SOLUTION, if you can believe it.
First of all, he verified my suspicion that what Netflix told me was totally bogus... Netflix provides the player and Logitech didn't remove the thumbnails.
He said that Logitech is definitely aware of the issue of the disappearing thumbnails and has what amounts to a permanent workaround.
1. Open the Chrome browser and hit the MENU key.
2. Scroll down to SETTINGS and select it.
3. Scroll to ADVANCED SETTINGS and select it.
4. On the left side, click on UNDER THE HOOD.
5. Click CONTENT SETTINGS.
6. About the middle of the page, click the DISABLE INDIVIDUAL PLUGINS link.
7. The "Default Plug-in" should be greyed out and the link unde rit should say "ENABLE". If it is not greyed out, click the DISABLE link and disable the default plug-in.
8. Exit this screen and then reboot the Revue.
9. After the Revue boots, repeat steps 1-4 to get back to the "under the hood" page.
10. At the bottom under USER AGENT, click on CUSTOM USER AGENT, type thee periods in the text box under "Custom User Agent" and click OK.
11. Not sure if we rebooted again, but it wouldn't hurt.
After the above, all my thumbnails came back slowly, maybe 30 seconds to a minute after I opened the Netflix player. He said that this fix is hit and miss, but when it works, it is a permanent fix.
He also said that they are working on another update for the Revue. No information about content or timing.
UPDATE:
While typing this, I opened Chrome to verify I had the right steps documented. When I opened Netflix again, the thumbnails were once again missing, but came back slowly the same as when I went through these steps with the Logitech CSR. However, Some of them were wrong (duplicates, I think)! After a couple minutes, they now seem to be correct, but there are still some thumbs missing (just blank boxes in their place). So I'm not sure this really was a fix.
Paul