Hey,
my FF developer edition recently upgraded to v73.0b12 (without my consent - I changed it now). Now, video streaming via Netflix and Amazon prime doesn't work anymore. Netflix gives the error code F7121-1331 and Amazon says "video not available - a problem occured [...]". I'm absolutely clueless, is there a possibility to fix video streaming without a versions rollback? (I've been using FF developer edition since 0-day (4th of may 2019) when all old add-ons ceased to work in the hope to make it work again. it didn't, but I managed to personalize the user.css to mimic the good old multirow tab add-on, and I don't want to do this all over again by e.g. installing another version.)
Thanks in advance!
