Cannot add new tasks after update to 5.10.4

Similar to @cavetech, it does not display an update being available in the UI. Even when I try to force an update, it still stays on v5.10.4.

@david I have manually updated (via CLI) to v5.10.8 and the same thing happened as before. In the UI, it tells me an update is now available, but when I try to do so, it says Force Update. When I Force Update the installation reverts back to v5.10.4.

The most recent error in my storage/logs is from 2 weeks ago, prior to the timezone fix that you made. There are no other errors since then. I have no nginx errors and no PHP errors either.