Here's a list of specific problems and their workaround.
No searchbar available on homepage
This problem could be resolved by installing the last version of your web browser.
On Firefox 62 and older versions you can change the configuration:
- Type about:config in the search bar
- search for
dom.webcomponents.shadowdom.enabledand double click to set it to true
- serch for
dom.webcomponents.customelements.enabledand double click to set it to true