Tile Palette --> Doesnt save tile rotation

Hey guys,

I´m currently using Unity´s tile maps and I´m very happy about this feature in general.
But I encountered something that may be a bug while using the tile palette.

As you may know you can rotate your tiles on your tile palette while using the edit mode and changing the rotation of the tile in the inspector, this worked fine at first,
but when I switched my current tile palette the rotation of the tile switches back to zero (I even saved my project after changing a tiles rotation)

Is there a way to save the rotation of the tiles in a tile palette? I tried multiple versions of
Unity even the newest beta version and it doesnt seem to work (stangely I got one tile to save its rotation in the beta)

(I tried 2017.3.1f1 and 2018.2.0b4, every version in between seems to have general problem displaying
tiles in the tile palette)

 

I'm just noticing the same issue. Is this a bug, and is there a solution?