Prime minister's aide refuses to issue apology or correct the record after false claim in the Commons.
The monarch's formal approval of the bill marks the last step of a years-long process to secure a trade agreement with the EU.
MPs heading home for Christmas could quickly return if trade deal agreed in last-minute rush to pass legislation.
There was laughter in the Commons as the prime minister, who is self-isolating, appeared to have been muted at a key moment.
But Commons authorities have refused to reveal how many new cases have been recorded in recent days.
Sir Lindsay Hoyle said the way the government has exercised its powers during the coronavirus pandemic had been "totally unsatisfactory".
The government released the news that social gatherings would be cut to six via a press release to the media.
Lindsay Hoyle's comments come after Boriis Johnson reportedly met with 50 Tory MPs in a room with a maximum capacity of 29.
Compromise plan expected after concerns from Commons Speaker over end of hybrid proceedings.
Ministers are working with parliamentary authorities to ensure the Commons can sit virtually after the Easter break if necessary.