Stopped working in Version 41.2 (35397)
It hasn't been moved to the "Deprecated" category by Sketch, but it doesn't actually load my palettes anymore :( I miss it dearly.

To clarify, I follow the same steps I always did: Sketch Palettes > Document Colors > Load palette... [choose my palette]

Before, it would add the colours to my file.

Now, it does nothing at all.