Sleeping under a winter's feast tree does not give a gift with winter's feast enabled.

Did you sleep under the tree during Winter?

2 hours ago, Picklesaurus said:

Did you sleep under the tree during Winter?

Yes.

But sleeping under the tree before the QoL update spawns gifts under the trees regardless of seasons. So this is odd.

 

It can be a bit buggy. Make sure there is no light around, take off any lights off the tree, and try sleeping before nightfall, and next day after it already goes dark. It's bound to work at some point. 

54 minutes ago, BezKa said:

take off any lights off the tree

Festive lights should not pose an issue. They're meant to keep you in the dark long enough for the gifts to arrive.

It works now after I shut off my pc and turns it on again. Probably a rare bug I guess.