Hover tooltips stopped showing up after ~15-20min on pull request

Created by: mrnugget

(Not super urgent, but I decided I'll finally create a ticket to document this so I have a place where I can drop hopefully better debug information in the future)

I was reviewing this PR, with my Sourcegraph extension connected to k8s.sgdev.org. Hover tooltips showed up while I was reviewing the code, I even did a "Go to definition".

Towards the end of my review, so 15-20min later, tooltips stopped showing up, so I opened up the Firefox debug console for the extension and saw this:

I don't know whether that is even related or not, but I thought I'd drop it in here.