My horses much prefer the larger front pasture (3 acres) to the smaller sacrifice pasture (1.5 acres), despite it being more than sufficiently large for them. For one - they know that pastures are better than dry lots. Because they are horses.
And, mine are kind of nosy. They like being able to see up and down the street, watch people walk by, see what’s going on the world. In the back, their view is limited, and they know it.
So, when they get moved from the pasture to the sacrifice area, they aren’t really that happy about it. I am lucky that mine all have access to the barn so I don’t need to lead them. I’m sure they would be idiots a lot of the time too.
Usually, mine get over it. Then when I reopen the larger pasture they go crazy for it. Again - I’m glad I don’t have to lead them out in the spring because it would be like flying 1000lb kites.
Not sure there is an answer, but it sounds perfectly normal.