the problem occures on two of my sites (I use your plugin on more sites but have not testet yet).
One is a static page (https://rainer-knappe.de)
One is a pure blog (https://akalpremkaur.de)
I can verify that.
With version 0.9.0.3 the cache does not clear. You can also not delete it with the button “Clear Cache”.
A rollback to version 0.9.0.2 solved the problem for me.