Kindly let me know what issue you are facing.

Very Important for Firefox 70 users: By default you won't be able to type / and ' in ChroPath selector box because of below preference, so please change it.

1. Open Mozilla Firefox and type about:config in the addressbar and press Enter. It'll show you a warning message, click on "I accept the risk!" button.
2. Now paste "accessibility.typeaheadfind.manual" in Search filter box and it'll show following preference in the window:
accessibility.typeaheadfind.manual
3. This preference is set to true by default i.e. enabled. To disable the feature, double-click on accessibility.typeaheadfind.manual preference and change its value to false.
Here is the video for same:
https://www.youtube.com/watch?v=iEamqrmqhHk