@Ruarí in addition to what was reported in the topic of this problem, it also affects extensions such as violentmonkey, in the code editor there are two options "copy" and "paste" and these two options do not work because vivaldi does not ask whether it should allow access to the transfer area, as happens in other chromium browsers.
29-setembro-2026 = 09-25-36.png 29-setembro-2026 = 09-29-02.png