I'm using two different profiles at work simultaneously with the Firefox Developer Edition. When Firefox updates in the background, sometimes new tabs just don'

I'm using two different profiles at work simultaneously with the Firefox Developer Edition. When Firefox updates in the background, sometimes new tabs just don't work anymore and keep loading indefinitely. But I cut Mozilla some slack for it since this is a pretty unusual setup and the Developer Edition is updating quite a lot compared to the release branch and it doesn't happen all the time.