"Float" Movement problems

Prior to the recent patches (before 1.15) I was able to easily make unit have different flying height while still having collision by using "float" as movement type and setting the height to whatever I need. Recently when i tried using float, however, I noticed that it doesn't affect unit's height once WC3 launches anymore. Furthermore, I also noticed that although the units of the unit-type with "float" movement that were already on the map when the unit's movement was changed to float did not dissapear, I was unable to place any new units of this unit-type while its flying height was above 0, the unit just appeared red (unplacable) no matter where on the map I tried to place it. I tried to see if this was a problem with 1.16 or 1.15 by running other maps that use float movement, like COT RPG and Islands TD, and both of them had "floating" units at flying height, so the float still works for them. Also, the "fly" movement type works like it should with the unit. And I also modified my UnitMetaData.slk to allow upgrading, training units, and selling units to units and not just buildings, although I don't see how this would interfere with float without interfering with fly. Does anyone have a similar problem or knows what's causing this?

Are you sure you're talking about the right thing? I believe that Float has never allowed differences in movement height, because it's the movement type used for boats who cannot go on land. It sounds like you're talking about Hover, which does, in fact, allow different movement heights, and only allows units to walk on ground-pathable terrain.

Whoa, my memory has never let me down this badly before. Yes, hover does indeed work, this is odd, I could have sworn I was using "float", and I also remember trying to change height of hover a long time ago (back in the days of 1.00) and the height had no effect, but perhaps I was changing something else then that looked like height, or maybe this was also one of the bugs caused by using the custom units in Units folder as I did back then for the marine, zerg, and flamethrower orc. Anyway, thanks.