ERROR: show parameter sga shows all parameters, not only sga parameters (4321186)

When running "show parameter sga" in sqlplus, only the sga parameters are being shown.

SQL> show parameter sga

NAME                TYPE            VALUE
-------------------   ---------------  -----------------
lock_sga            boolean        >
pre_page_sga    boolean        >
sga_max_size   big integer    >
sga_target          big integer    >

When doing Execute as a script > in Toad, all parameters shown, not only sga parameters.

WORKAROUND:

None

STATUS

Issue resolved in version 12.12. The latest release can be downloaded here.