Perspective Views Not Rendering

[Jason_Zhou]

First time coming across this error, but I've somehow managed to kinda corrupt a Perspective view. Its root isn't accessible in the designer, and also can't be looked at with the Perspective Property Editor. It looks like this in the Project Browser:

And the view itself looks like this:

So I'm going through and editing the view's JSON file directly to some amount of success. My question though is, what does the circle icon indicate? What does the amount filled in mean, and does its orientation also suggest anything?

And on the side: what are some good practices to go about solving this kind of issue?

[pturmel]

That usually means you've crashed the Designer's Chromium sub-process. Look for suspicious warnings in the designer's console.

[Jason_Zhou]

Getting stuff like this:

Do you have any wild guesses as to anything I could be doing in the designer that could cause these?

Edit: additional error message in the browser console:

[pturmel]

@Jason_Zhou

Getting stuff like this:

That's the gateway log. I meant the designer's console. (Separate from the browser console.)