Broken collision on https://www.y8.com/games/crazy_koala

[thatsprettygood]

Describe the bug
Collision is broken on level 2, making it impossible to beat.
Expected behavior
Collision is fine and the level can be beaten.
Is the problem with the Ruffle desktop app, extension, or self-hosted version?
Desktop
What platform are you using?
OS: Windows 10

[starblinky]

Issue is with HitTest when checking for hittest on a point.
if(mc_wall.hitTest(mc_hero.__x,mc_hero._y, true)){

It can occasionally return true even if it isn't hitting anything. I found that it thought it was hitting other parts of the level that was no where near the hero x/y coordinates. If you smooth out the graphics as much as you can, it will vastly improve this issue although won't fix it entirely. Or if you erase chunks of the level/wall to find what parts it thinks it's hitting.

[Herschel]

Seems like this is actually another case of #5492, where the ground on level1 is still hitTested even on level2. Both clips have the instance name ground, but the variable isn't reset when the old one is destroyed and the new one is created.

[relrelb]

This was fixed by #9447, so closing.