Premiere Pro CC 2018 effects/Lumetri bug

Since updating to Premiere Pro 2018, I've been experiencing a bug with Lumetri Color.

In certain random projects, I cannot seem to be able to see any changes I am making in the Lumetri Color Panel to my clip, unless I render my clip in the timeline. In other words, I am blindly applying color correction to a clip without being able to see what I'm actually changing, or the effect it's having on my clip, until I render the clip, then it shows me the results of my color correction.

Once my clip is rendered, if I want to make further changes, my color correction will reset back to its default view (as if it had no color correction at all), until I render the clip again in the timeline. Obviously, as someone who uses Lumetri Color a lot, I can't work like this.

I've tried clearing render/cache files, but that seems to have no effect. Once this problem occurs in a certain project, that project file seems to carry this bug with it, even if I reset all my effects and start from scratch, or if I open the same project on a different computer.

I've already submitted a bug report about this. Was just curious if anyone else if having this problem?