Hi ender21, what is this file:

css code for a list is in searchbar.css imported into userChrome.css. Why has it stopped working and what can I do about it?

I notice my rules from the following page need to be updated as well, so if that is the source, give me a little while to report back:

https://www.jeffersonscher.com/gm/search-bar-names.html

I am aware of your page but I don't remember whether I got my document from there; I refer to your page in the preamble but it looks different from yours. I don't see anything relevant in the release notes for v.69. This is my code : @-moz-document url(chrome://browser/content/browser.xul) {

 /* Make the one-off buttons span the full width */
 #PopupSearchAutoComplete .searchbar-engine-one-off-item[tooltiptext] {
   width: 100% !important;
   height: 24px !important;
   background-image: none !important;
   padding-left: 6px !important;
   box-sizing: content-box !important;
   line-height: 1em !important;
 }
 /* Hide the empties */
 #PopupSearchAutoComplete .searchbar-engine-one-off-item:not([tooltiptext]) {
   display: none !important;
 }
 /* Fix up borders */
 #PopupSearchAutoComplete .searchbar-engine-one-off-item[tooltiptext], 
 #PopupSearchAutoComplete .addengine-item {
   border-bottom: 1px solid #ccc !important;
 }
 #PopupSearchAutoComplete .search-setting-button.search-panel-header, 
 #PopupSearchAutoComplete .addengine-item,
 #PopupSearchAutoComplete .search-panel-header.search-panel-current-input {
   border-top: none !important;
   max-height: 26px !important;
   min-height: 16px !important;
   padding-top: 1px !important;
 }
 /* Insert descriptive name for search engine plugin */
 #PopupSearchAutoComplete .searchbar-engine-one-off-item[tooltiptext]::after {
   content: attr(tooltiptext);
   margin: 5px 6px 0px !important;
   display: block !important;
 }
 /* Fix icon positioning */
 #PopupSearchAutoComplete .searchbar-engine-one-off-item[tooltiptext] > .button-box {
   display: inline-flex !important;
   width: 16px !important;
   max-width: 16px !important;
   border: none !important;
   padding: 0 0 !important;
 }
 #PopupSearchAutoComplete .searchbar-engine-one-off-item[tooltiptext] > .button-box > .button-icon {
   display: block !important;
   margin-top: 4px !important;
   margin-left: -1px !important;
 }
 /* Lock in space for 5 search suggestions with scroll bar */
 #PopupSearchAutoComplete .autocomplete-tree.plain.search-panel-tree .tree-bodybox,
 #PopupSearchAutoComplete .autocomplete-tree.plain.search-panel-tree .autocomplete-treebody {
   display: flex !important;
   flex: 1 1 auto !important;
 }
 #PopupSearchAutoComplete .autocomplete-tree.plain.search-panel-tree .autocomplete-treebody {
   max-height: calc(5 * 1.5em) !important;
   min-height: calc(5 * 1.5em) !important;
 }
 #PopupSearchAutoComplete .autocomplete-tree.plain.search-panel-tree .tree-scrollbar[collapsed="true"] {
   visibility: visible !important;
 }
 /* User style options */
   /* One column - standard spacing (built-in above) */
   /* Hiding "Search for ..." */
 #PopupSearchAutoComplete .search-panel-header.search-panel-current-input {
   display: none !important;
 }
   /* Not hiding "Add ..." engine */
   /* Not hiding "Change Search Settings" */
   /* Search bar tooltip text only visible on mouseover */
   /* For light theme */
 #PopupSearchAutoComplete .search-panel-one-offs:not(:hover):not([selected]), 
 #PopupSearchAutoComplete .searchbar-engine-one-off-item:not(:hover):not([selected]) {
   color: #111 !important;
   background-color: #fafafa !important;
 }
 #PopupSearchAutoComplete .search-panel-header, 
 #PopupSearchAutoComplete .search-panel-input-value, 
 #PopupSearchAutoComplete .addengine-item {
   color: #111 !important;
 }

}

In the first line, change

browser.xul

to

browser.xhtml

and see how it goes.

Thanks. I wasn't expecting an answer so soon. That has fixed it.