sort by column of optional table does not work for MariaDB

[robstoll]

3. If you have a bug report, use the applicable parts of the following template (modify as needed):

DESCRIPTION:
if you want to order based on a left joined table, then Slick generates the following order by clause:

order by (syntheticColumn, column)

Where syntheticColumn is the column introduce by slick to handle the left join, looks in SQL something along the line of:

(case
  when (x2.`personId` is null) then null
  else 1 end) as x20

This works for H2 but not for mariaDB

EXPECTED RESULT:
For mariaDB it should be

order by syntheticColumn, column

SETUP:
db: mariaDB