Column sorting seems not to work in all cases

Below is a screenshot of some email addresses in the same domain (parts blanked out for privacy), where the "Source" column has been selected for sorting (as shown by the arrow next to the column name). I'm not sure what collation is being used, but the addresses are all ASCII and don't appear to be sorted as one might have expected.

sean No, no errors. I should mention I'm using Firefox 82.0.2, in case that's relevant.

I can reproduce this easily. On my dashboard:

1. Go to "Email Addresses".
2. Filter using "maj". There should be 13 entries shown.
3. Click on the "Source" column heading to sort on that column. Note the lack of expected ordering. Click on the heading again to reverse the sort - it still doesn't sort as expected. When the sort is ascending, the initial letters of the first entries are c, t, w, y, y, c, e. When the sort is descending, the initial letters are y, y, w, t, c, u, s.

As mentioned above, Firefox 82.0.2.