Search suggestions must be disabled as this could lead to searches being conducted that were never intended to be made.
Windows group policy: 1. Open the group policy editor tool with 'gpedit.msc'. 2. Navigate to Policy Path: Computer ConfigurationAdministrative TemplatesMozillaFirefoxSearch Policy Name: Search Suggestions Policy State: Disabled macOS 'plist' file: Add the following: <key>SearchSuggestEnabled</key> <false/> Linux 'policies.json' file: Add the following in the policies section: 'SearchSuggestEnabled': false