It's not even Ruffle that breaks the egg (heh). I ran the game locally in Flash player 29.0.0.113 and it gets stuck all the same. The expanding ring that appears from the cursor normally when clicking in that area disappears the moment when the egg drops in place. Doesn't help if you pre-click before it drops.
Know this: the game will never be updated here. The developer is permanently, fundamentally and irrevocably focused into platforms other than Adobe Flash, such as updating the console versions of the game. Adobe Flash has an official end-of-life year of 2020. No developer will focus effort on updating Flash version anymore, let alone convert it to HTML5 seeing how much other stuff he has on his plate already. Before you say anything to the lines of "but IriySoft...", know that they have a team of 7-12 people currently and it seems that kChamp is still a one-man effort.
Even the PC (Fart)Steam paid version has had a lot of unfixed bugs for at least 3 years. Some of the bugs are detailed in a post by Tyrannis, 25.10.2018 on the Steam fartums- eh, forums. Maybe kChamp has good intentions, but road to development hell is lined with them.
Don't know why I even bothered. It's extremely predictable that this will be bashed to minus infinity.
Works now with everything after a repository update (using Linux). That update included Adobe Flash Player (32.0.0.171->32.0.0.192). Durr. Should have suspected that from the beginning.
No longer works, at least on Firefox Quantum 66.0.3 (64-bit), Palemoon 28.5.0 (64-bit) or Midori Web Browser 8.0 due to various security errors related to CORS requests.