When I Create Map Tile Package why do i get a spatial reference of none in my tpk?

[MarikaVertzonis]

I am using Pro 1.1.1.

I have an esri basemap and one layer of my own. The spatial reference of my map is web mercator.

I then use the Create Map Tile Package tool to create a .tpk. It appears to complete successfully, and i can upload this .tpk to AGOL for sharing with my apps, but my app is expecting the spatial reference to be equal to WGS_1984_Web_Mercator_Auxiliary_Sphere but instead it is None and therefor doesn't not work in my app.

To check all this I opened the .tpk in notepad for viewing, and i see this:

Instead i would expect to see

<spatialreference>WGS_1984_Web_mercator_Auxiliary_Sphere</spatialreference>

How do i ensure my .tpk has the spatial reference correctly defined?

[MarikaVertzonis]

I just updated Pro to 1.2, with fingers crossed. But alas, no change in behavior. Can any spot what Ive done wrong?

[Jan_Pieterden_Boer]

Is there already a solution for this question?