I'm experiencing a couple of weird things in Wordpress.I'm changing font colors and adding

I'm using Membership plugin version 3.4.4.2 and Wordpress version 3.5

I'm experiencing a couple of weird things in Wordpress.I'm changing font colors and adding a link to few words and update it right away. Sometimes, after updating, the page will lose the color characters I've just changed or will not have the words I added the link to clickable. The link is gone. Anyone has an idea for how to solve that? I'm not new to Wordpress and using the Membership plugin.

Changes I make don't update or only partially update after clicking "Update" button.