EDIT: Wrong It is intended Weighty to trigger Lumbering. The trick is while you are Flying, Lumbering doesn't affect your movement. Flying This unit ignores restrictions and penalties imposed by terrain and may move across chasm spaces without dying. Immune to the effects of Lumbering unless Grounded.
light as a feather doesnt grant flying it grants 1 AP mobility and removes lumbering. you have confused with butterfly wings.
Oh my bad, sorry. In that case, it's working as intended in terms of coding. The spell triggers a function that dispatches Lumbering and gives it back after 6 turns, and doesn't check every time if you have any other source of it. It might be nice to recode it to consider this kind of scenarios since Weighty is a new ability. But I can hardly see it as top priority.
i think it should just prevent lumbering for 6 turns. cause thats what its intention was. It can be a rather large pain though especially when you consider that after weighty triggers if you use light as a feather and then move again lumbering will come back. should get coded to remove lethargic/lumbering/weighty
You are right again. Coding the three abilities it's a nice easy fix. Still the opponent can give you Lumbering, but that's less likely.