Seems you upgraded to Lr CC Classic. Stop by that forum to get an answer to your question
Still a problem, but I will check there too.
Sorry, is this happening, have you tried updating the Lightroom CC to 1.1 version via Creative Cloud desktop and check if that helps to fix this issue?
Those circles are called Pins. Try pressing the H key for show/Hide.
Can you clarify which version you're using please? Lightroom CC 1.x or Lightroom Classic? Lots of people are confused right now, so we're just trying to make sure everyone gets the right information.
Try turning off the GPU acceleration under preferences and see if they reappear. I was missing those too and noticed that LightroomCCHelper was crashing on my machine - after turning of GPU acceleration, they reappeared and the crashing stopped.