Intrusive add-on. It has replaced the new-tab web with their one. Nothing useful, basically an add, change introduced without warning and with no way to disable it (well, you can disable the add-on).
thanks for review. Here is a short link that explains how to use an addon https://py.checkio.org/blog/new-tool-checkio-client/ also the new-tab feature can be disabled at the first time when you saw it or in settings.
