Prototyping issues (missing index; stuck on one frame)

I’m seeing two prototyping issues since the last couple of weeks:

  1. Mockup numbers (3 / 16) are missing from the bottom. Instead, I only see < > left right arrows. I hope this isn’t a deliberate change to make prototypes feel like real prototypes because those numbers are very helpful while presenting designs or seeking feedback.
  2. Relatedly, sometimes if I use a prototype, switch tabs, come back, the arrows disappear from the bottom as well and I’m left stuck on a single mockup.

Anyone else seeing these issues?