Also, check your about:config and filter by IDN, you should see a lot of settings there. Any of them not set to default?
Especially check this one: network.enableIDN
by default it is set to True.
What other Firefox addons do you have that might be parsing URLs before you visit them? Any?
Thanks a lot for the feedback!
network.enableIDN;false (user set)
NoScript, AdBlock Plus
Also, check your about:config and filter by IDN, you should see a lot of settings there. Any of them not set to default?
Especially check this one: network.enableIDN
by default it is set to True.
What other Firefox addons do you have that might be parsing URLs before you visit them? Any?
Thanks a lot for the feedback!