deactivate-boundary-inline-elements.css

/*
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/

/*
  An elements with "display:inline-flex" is visually rendered as a regular
  inline box, but it is actually treated as a non-inline box internally.
  The API "browser.find.find()" (and Firefox's native in-page find feature also)
  fails to find a term across the boundary. Thus we need to change its "display"
  temporary while finding URI-like texts in webpages.
*/
.textlink-boundary-inline-node:not(#never#match#to#any#element) {
  display: inline !important;
}