After clicking on the 'build'/'cancel build', 'power on'/'power off', etc. buttons on the host detail screen, the application is actually in a modal wait state. However, this isn't indicated; the cursor doesn't change (such as to a watch, etc.), the other buttons are still clickable, and so on.

If another button is clicked before the first action is completed, it looks like it is enqueued, but actually seems to get lost. For example, clocking on 'build' followed by 'power off' before the build acknowledgement pops up results in no change in the power status.

Suggestion: Until the clicked action is complete, a) change the cursor, and b) possibly grey the screen or lock the other buttons or disable the form.