Bug report: [layer mask] editing colors

Question

Sometimes it appears that the white/black color combination that is automatically selected in layer mask editing may override the selected color combination outside of layer mask editing.
Example:
1) Open Photoshop.
2) Select two colors: white/white.
3) Create two blank documents, each with an empty Layer 1.
4) In one document, add a layer mask to Layer 1. The colors should have been automatically switched to black/white as the layer mask is selected.
5) In this document, use the gradient tool to fill the layer mask with black/white.
6) Switch to the other document, and notice that the color selection is again white/white.
7) In this other document, use the gradient tool to fill Layer 1. Notice that the layer is filled with black/white instead of white/white as selected.
Tested on: PS CS6, Windows 7, 64-bit.

Answer 1

On further testing I think the issue may not be directly related to layer masks at all.
Basically the issue is that the Gradient tool colors don't update to the 'default foreground/background colors' in cases where it seems that they should.
One example of such a case (as illustrated in the original post) is when the Gradient tool keeps the black/white color combo used for a layer mask in a previous document after switching to the current document where a non-masked layer is targeted and the default fg/bg colors have correctly reverted to white/white.
Example:
layer mask targeted in doc1 - notice synchronised Gradient and default fg/bg colors
after switching to non-masked layer in doc2, Gradient is still black/white although default fg/bg colors have reverted appropriately to white/white
Bug or not, it's something I wanted to point out as it seems inconsistent.