Firefox Tekoha Aty

I found 'chromeasia.com' autocompleting in the Firefox address bar upon typing 'ch'. I searched History for this and there was no sign of it. I cleared all history data, rebooted, ran a disk cleanup and find that 'chromeasia.com' stil autocompletes upon typing 'ch' in the address bar.

Any suggestions or advice on how to clear this would be warmly appreciated. Thanks. Stephen

Consider the following scenario: I want to go to "nextcloud.com", so I go to the address bar and start typing. Unfortunately, I make a mistake, and the first character I type is 'b'. Firefox then offers the autocomplete "bc.co.uk", and highlights it. I type another different letter, the added autocomplete offer is replaced with the character I added, and it will try to offer another autocomplete suggestion with all the characters I have typed so far. However, I realised the 'b' was wrong, so I press <backspace> then start typing "nextcloud.com". Of course, the backspace key now only removed the autocomplete suggestion, leaving the original 'b' I typed (so I now have "bnextcloud.com"). My question: Is there a way set configure firefox so that the key sequence 'b' followed by '<backspace>' to return the address bar to the original (empty in this example) condition? If this means turning off auto-suggest, I am happy to do that, since I don't use it anyway.

Thanks.