Related: tdf#122301 TRANSPOSE() with ForceArrayReturn on caller

As stated in

ECMA-376-1:2016 OOXML 18.17.7.327 TRANSPOSE
"The formula containing the call to TRANSPOSE shall be an array
formula [...]"

Similar to

    commit d0ded163
    CommitDate: Wed Jan 16 11:17:14 2019 +0100

        Related: tdf#122301 FREQUENCY() with ForceArrayReturn on caller

Change-Id: I617bfcc0b8ecb244df3441ab885ec926efd77e3f
Reviewed-on: https://gerrit.libreoffice.org/68436Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins

sc/source/core/tool/parclass.cxx

@@ -174,7 +174,7 @@ const ScParameterClassification::RawData ScParameterClassification::pRawData[] =
     { ocMatDet,          {{ ForceArray                                           }, 0, Value }},
     { ocMatInv,          {{ ForceArray                                           }, 0, Value }},
     { ocMatMult,         {{ ForceArray, ForceArray                               }, 0, Value }},
-    { ocMatTrans,        {{ Array                                                }, 0, Value }}, // strange, but Xcl doesn't force MatTrans array
+    { ocMatTrans,        {{ Array                                                }, 0, ForceArrayReturn }}, // strange, but Xcl doesn't ForceArray on the argument
     { ocMatValue,        {{ Reference, Value, Value                              }, 0, Value }},
     { ocMatch,           {{ Value, ReferenceOrForceArray, Value                  }, 0, Value }},
     { ocMax,             {{ ReferenceOrRefArray                                  }, 1, Value }},