Description of the suggestion:
In its current form the iOS content blocker filter list update feature (added in the latest testflight build) does not communicate to the user how the update is progressing. This can be confusing and/or annoying for the end user as it is not clearly indicated what is happening. A simple progress bar or a percentage counter would go a long way in mitigating the potential frustration caused by unknown update length.
Compare this to how it is done on desktop as of #6449:
