[FF] add-filter-comments-by-you - select_dom_default(...)(...) is null #1466

The feature add-filter-comments-by-you does not work, because .subnav-search-context .js-navigation-item:last-child selector can not be found. I checked with document.querySelector(...).

Error log:

TypeError: "select_dom_default(...)(...) is null"
add_filter_comments_by_you moz-extension://82def1c9-2a9d-44a4-80d4-efe560a3dae2/content.js:3201:5
enableFeature moz-extension://82def1c9-2a9d-44a4-80d4-efe560a3dae2/content.js:1712:13