Track position don't take care about disc number

If an album have two (of) more disc, tracks are ordered by position (track number) but no by disc. I think disc number should be in the json track objects to order by disc and position.

The first track displayed is the first of the second disc.

tracks	[…]
0	{…}
id	1132
mbid	65354ded-358e-4ad2-aa05-3116b7e4d5b6
title	Holy Water
album	123
artist	{…}
creation_date	2018-08-25T19:10:18.000590Z
files	[…]
position		1
1	{…}
id	1123
mbid	82313573-be82-4d29-9ff2-ef132aee1de6
title	Out of My Mind
album	123
artist	{…}
creation_date	2018-08-25T19:07:09.220542Z
files	[…]
position		1