Reiterating: @CCleaner wipes out all the settings of @MozWebExt (@mozamo extensions) every time you close your browser, if you've set it to clean 'Internet Cache', probably due to a change in how @firefox>= 79 stores its permanent data.
Discovered: 01August2020 Reiterating: @CCleaner wipes out all the settings of @MozWebExt (@mozamo extensions) every time you close your browser, if you’ve set it to clean “Internet Cache”, probably due to a change in how @firefox>= 79 stores its permanent data. <— oh really?