I expect it to do the same thing as L ALT + ← which goes back one webpage backwards. But R ALT + ← does nothing in Mozilla Firefox browser. I am using Ubuntu 20.04.03LTS.
For example:
I have kept GoogleTranslate.com tab opened in my FireFox browser for around a week and I have made numerous queries during this era. Now I want to trace back my queries one by one, by pressing Right Alt + ← but it doesn't work for me, it does no thing.