1474593 - Flash based internet game Mega Mechs is breaking after stage 3

Status: RESOLVED WONTFIX

(Core Graveyard :: Plug-ins, defect)

Description

[Vlad Lucaci, Thunderbird QA (:vlucaci)]

[
[Affected versions]:
- 62.0b7
- 63.0a1

[Affected platforms]:
- macOS 10.12.6

[Steps to reproduce]:

1.Go to http://www.y8.com/games/mega_mechs_assembling
2.Complete 3 stages of the game.

[Expected result]:

- After completing stage 3, the Level complete animation + result screen is displayed.

[Actual result]:

- The application's animations are hanging and running extremely coarse, the audio enters a loop, and the user is no longer able to continue the game, has to refresh and looses progress.

[Regression range]:

-Will return with regression range ASAP.

Here is a Screen Cast of the issue: https://drive.google.com/file/d/1A5i_6g8spkMEg-jFg1RikWmro59AJBNJ/view?usp=sharing

[Additional notes]:

- This issue does not occur on Chrome or other platforms (Win,Ubuntu)
- This issue does not occur on the Release FF version 61.0.1
- No errors are displayed in the WebConsole when this issue occurs.