As the subject describes, installing [https://www.microsoft.com/en-us/bing/bing-wallpaper Bing Wallpaper] causes the vanishment of icons of the six default search engines in my region (China Mainland), i.e. Baidu, Wikipedia (actually the icon of Wikipedia is still there), Bing, Google, Amazon and DuckDuckGo, but these search engines themselves are still usable though. It is probably caused because I chose the choice that setting Bing as my default search engine of all browsers and the application (Bing Wallpaper) reset all those engines. I have tried removing these engines from my settings list then adding them back, but the icons are still invisible. I have not tried to uninstall and reinstall my Firefox. My Firefox version: 94.0.2 My OS version: Windows 7 6.1.7601, Service Pack 1