Sadly, there appear to be several issues with this update, too, and Nvidia is working on them. There are plenty of other bug fixes in this build, though, like ones related to HDMI connectivity, audio, storage, and accessories (you can see a detailed list changes on the company's website).
Fixes storage permissions on media player, file browser, and emulator apps.The main issues being addressed in this release appear in Nvidia's changelog: Those bugs popped up after installing the Android TV 11 update for the boxes. Nvidia has started distribution of its Shield Experience Upgrade 9.0.1, resolving the Plex server and storage permissions issues. It's worth checking out Nvidia's patch notes for all the fixes and installation instructions. When the next public update is pushed out, your device will receive and download it as normal. You'll have to sign up for this patch through Nvidia's website manually, and once your device receives and installs this software, there's no way to roll back. This is a hotfix, not a stable update, so it does come with some restrictions. So if you recently stumbled into internal folders for ringtones and downloads, those are thankfully getting removed.
Playback issues with interlaced content, CEC volume control increment glitches, and the accidental creation of default Android folders meant for phones are all patched and resolved.
It's not the only fix included in this update, of course. Shield owners lost one of the most valuable tools in their arsenal with this update, but thankfully, Nvidia prioritized its return. That's what makes it such a popular gadget, despite its relatively high asking price. The 2019 Shield TV Pro can be used as a Plex server, completely eliminating the need for an external device.