Loading spinner disappears intermittently when installing cluster applications

Right now, whenever you install a cluster app, the flow looks something like this:

1. Button says "Install"
2. Click button
3. Button says "Install" with spinner (greyed out)
4. Button says "Install" no spinner (greyed out) -- why?
5. Button says "Installing" with spinner (greyed out)

Solution

1. Button says "Install"
2. Click button
3. Button says "Installing" with spinner (greyed out)

/cc @tauriedavis