Object cache prevents creating files

[ding0z]

Hi
I am testing Simple Cache on a litespeed server. When I enable the object cache and set it on redis I have noticed that the plugin doesn't create any cache file in the cache directory. Everything goes back to normal once the object cache is disabled.
Another thing I've noticed is that the object cache PHP file is empty.
Is there something I can do to fix the issue?
The object cache on WP litespeed plugin works without problems.

Thanks in advance.