When I go to update my spreadsheet based on
https://www.worldometers.info/corona...us-death-toll/, often previous days vary a little bit. Right now it says "Coronavirus Death Toll 190,110 deaths," but the top of the chart is 184,066.
I do not believe that they have posted the final number for today, but the ticker will continue increasing as they receive additional data, while the chart will freeze for today, so it looks like there is a problem, but I am sure that the ticker shows immediate data, while the chart shows the data as of midnight or whenever the cutoff is.
I am pretty sure that old data varies because they receive updates, that a death that was diagnosed as coronavirus was ruled out, etc.