Yes, in Soos and Ford's case, they only got their height altered.



I mean in "Little Dipper", Gideon shrunk Soos beliving he was Stan, until he realized late, he shrunk the wrong person, Dipper and Mabel later help Soos, I still wonder if he recovered his original size.

In "Dungeons, Dungeons And More Dungeons" Probabilitor shrunk Ford and Dipper, turning them into game characters (with Elf Ears) to force Stan and Mabel to play, the only way to saving their respective twins, Stan saves them when he cheats.



In case of Dipper and Mabel is complicated...



Remember that in "Little Dipper", Dipper wanted to be taller than Mabel and he used an size-altering flashlight, when Mabel discovered about this, Dipper and Mabel fought over the flashlight and during their fight Dipper's head and Mabel's hand were enlarged and Mabel's head was shrunken, but they were fixed. I still wonder if they recovered their original proportions, considering the impresice nature of the flashlight. Then Gideon found the flashlight and shrunk the twins, in the end they end saving Stan and recover their sizes. Again... Mabel and Dipper recovered their actual size and their original proportions?



Dipper was shrunk along Ford in "Dungeons, Dungeons And More Dungeons", but again, Stan saved them in the end. And...



Mabel enlarged her hand in "Weirdmageddon 4: Somewhere In The Woods" to break a hole in the Fearamid, again... her hand's proportions were fixed?



In any case, I don't know, why I keep brainstorming myself with that, but I overthink so much in that.