UserAgent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0

Example URL:
https://clb.heroes-online.com/en-US/home

Steps to reproduce the problem:
1. Go to the Heroes Online game website
2. Log in
3. Click on the "Play Now" button

What is the expected behavior?
The game should start, which is a flash application occupying the whole browser window.

What went wrong?
Instead of starting the game, an error window pops up, claiming that Adobe Flash Player can't be detected.

Does it occur on multiple sites: N/A

Is it a problem with a plugin? Yes flash player

Did this work before? Yes 68.0.3440.75

Does this work in other browsers? N/A

Chrome version: 68.0.3440.75 (openSUSE Build) (64 bits)  Channel: stable
OS Version: openSUSE Leap 42.3
Flash Version: 30.0.0.154

This is related to the decision of the chromium developers to no longer allow white-listing the flash plugin on specific websites. While I understand that flash is crappy and dying, and I have no problem with needing to activate flash explicitly every time I want to use it, in this case the option is not even given to me. Up to version 68, the only way I could get the game to start was with white-listing the website.

Now that the white-listing option is gone, I have no way to play the game. This is a chicken and egg problem. The game checks whether flash is available and chromium claims it is not. I can't enable flash because the area where the flash game would be does not even exist before the game has checked that flash would run. This leaves me without any chance to manually enable flash for this website.

So either the possibility to white-list sites must be restored, or you need to offer a way to allow the flash plugin on a given website even *before* any flash area is visible for the user.

Thanks for your attention and understanding.