SDO_RELATE different behavior on 19c comparing to 12c

Sašo C.

I have 2 geometries GEOM1 and GEOM2 with known spatial relation GEOM1 CONTAINS GEOM2

On Oracle 12c (and 11g) .

On 12c I get result with either

sdo_relate(GEOMETRY1, GEOMETRY2 ,'mask=CONTAINS') = 'TRUE' or

sdo_relate(GEOMETRY1, GEOMETRY2 ,'mask=INSIDE+COVEREDBY+ON+CONTAINS')  = 'TRUE'

But on 19c I get result only with sdo_relate(GEOMETRY1, GEOMETRY2 ,'mask=CONTAINS') = 'TRUE'

but sdo_relate(GEOMETRY1, GEOMETRY2 ,'mask=INSIDE+COVEREDBY+ON+CONTAINS')  = 'TRUE' doesn't return a result.

Am I missing something or this behavior is changed between 12c an 19c ?

Regards,

Sašo