Why can't I do "@" symbol at Brave

I use the current version of Brave. → Version 1.41.100

When I press option + q, it doesn’t appear “@” symbol. It was working but it has gone for nothing. Other browsers (including Safari) the combination is working but when I try it on Brave Desktop Browser in Macbook pro M1, 2020, it is simply not working.

Has anyone else encountered this error besides me? Or know the solution?

Okay, I solved the problem.

I installed the “QuillBot for Chrome” extension. When it is on, the combination doesn’t work. When it’s not, it works.

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