Hey,
I turned on REDIS object cache using the Object Cache Pro plugin. Everything works great, except using Meta Box's native re-order of posts.
I contacted Object Cache Pro support assuming it was an issue with their plugin, because when it's disabled and REDIS persistent object cache is disabled, the re-ordering of posts works perfectly.
Their support said Meta Box needs to "fix their plugin to work with WordPress' persistent object caching API."
The support person at Object Cache Pro said to copy him on the support email but there isn't a way to do that on the forum.
Meta Box support, if you need more information or something does not make sense, please let me know and I will try to get more context and details.