High CPU usage on seemingly-idle dashboard page

I am using Firefox.

When sitting on a seemingly-idle dashboard page (just the "work" tab showing the various documents), I am seeing Prismic take up 100% of a CPU core, and this doesn't seem to have any end.

If I unload the page, CPU usage falls to near zero. Open it up again and it rises to 100% again.

If I open the debugger and pause execution, it almost always lands in one particular spot:

I wonder if this is a bug. Using this much CPU for no discernable reason certainly seems like one.

Hi Bart,

I've tried to reproduce the issue, but with no success:

Maybe you can share with us (in a private message) your account email address so that we try to reproduce the issue on our side?

Note: have you tried another machine?

Looking forward to your reply,
Fares.