Addon works as supposed, spoofs the timezone. But it works too aggresively leading some of the websites and services to hang and crash.

it spoils local (lan) sites. must have exception list.

It works very well. But you have to disable the entire module if you want to temporarily disable/enable it.

Works on the surface, but there are other more aggressive means that bypass the add-on and get the system time of your computer.

Time zones must be reported as hours:minutes, not as minutes as it's absolutely inconvenient.

The add-on button doesn't allow to access its settings which is super inconvenient as you have to make a dozen of clicks to reach it.

Exceptions are a must.

In a disable state it becomes pretty much invisible with my panel background ( https://addons.mozilla.org/firefox/addon/linen-light ) - please fix.

Не понятно как работает, то работает, то нет.

It is not clear how it works, then it works, then it doesn't.

Has always worked well, but since this morning, he has made it impossible to use subtitles on You-tube.
Also, the permissions this addon has, are too far-reaching for the function it is supposed to perform.