When I left click the creature the creature window has all buttons.
When I right Click the upgrade and dismiss buttons are missing. Is this intended?
Unless I’m missing something - yes. Right-click shows temporary message that disappears when mouse button is released - you can’t click on anything in this mode.
When in town with your hero, if you rclick a unit in army a window will appear until you close it. And it is ok like this because in that info widow there are elements that respond to rclick.
Now that you got me thinking on this, I remember having an old idea (Caesar III old) of closing these windows also on rClick. Right now you have to manually lClick the “OK” button.