Dates of transactions are incorrect on tags report

I’m using the tags reports, and haven’t made any changes from default as far as I know. The date column for each transaction contains incorrect data, which is off by about 6 months. Why might this be / can anyone help provide a potential fix?

That is bizarre. The Tags sheet doesn’t really do anything to change or transform the dates.

Can you unhide N5:Q5 and confirm that the Date column lookup is pointing to the right column?
Mine looks like this:

Date 2 B 'Transactions'!$B2:B

Another possibility is that the date formatting is d/m/yy or something unconventional?