I used to have no problem using Firefox on my phone. I have an HTC One M7 with Android OS 4.3. As you may know, this phone came pre installed with Adobe flash. I would use my native browser but Lookout alerted me to a vulnerability on android browsers for OS 4.3 and below. Because of this, I installed Firefox. When it came to playing flash content, I had no problems viewing it through Firefox. About a couple weeks ago I started to notice issues with the flash content. I figured I needed to update Firefox so I did that. I still had the same problem. I also "force closed", restarted the phone, cleared the data and did a uninstall/reinstall. Nothing worked. I also went ahead and updated my flash player to the most up to date available. That hasn't worked either. I decided to test out Firefox on my old HTC EVO 4G with Android OS 2.3.5. Believe it or not, the same problem is occurring there so I KNOW it has to be something with Firefox. Did Firefox change something recently which is causing this issue??? Is there anything that can be done to solve this problem? I even tried installing an older version of Firefox (32 & 33) and still had the same issue. Someone please help.