It's just one example of things that used to work but got messed up again with the last update. Same applies to AT Guns on red cover and even garrisoned units in houses (the house on Semoisky summer across from the cutoff of the eastern base).
As a huge Half life fan I already checked that one out. Sadly in it's current state it's more like a waiting simulator since a game rarely works as intended. But overall I like it.
Well this is pretty much my state of the game report with more effort on historical accuracy and unit suggestions/rework ideas. You could have at least asked before just copy & pasting it in your thread.
It's still very good and I keep using it myself in teamgames. It's in a better state than it used to be in terms of balance. At least it's not a nobrainer unit anymore.