Unable to boost the qf field

[brigaldies]

The following syntaxes in "bq" do NOT produce the expected boost:

<str name="bq">{!match qf=MY_FIELD analyze_as=my_analyzer search_with=term v=$q}^2</str>
or
<str name="bq">{!match qf=MY_FIELD^2 analyze_as=my_analyzer search_with=term v=$q}</str>

Note that with edismax, the above first syntax does NOT work either, while the second does work:

<str name="bq">{!edismax qf=MY_FIELD^2 ... v=$q}</str>