In v2.1.2, saved pages with percent‑encoded URLs (e.g., https://en.wikipedia.org/wiki/M%26M%27s) get stuck on the "Loading..." screen. The page content can still be searched though. Tested with Firefox and Brave, same result.
v1.2.2 on AMO does not have this issue.
Screen Recording:
https://github.com/user-attachments/assets/d2d0e67d-27db-4d96-83d3-ac7bd12f9772