Index: binaries/data/mods/public/simulation/components/GuiInterface.js
===================================================================
--- binaries/data/mods/public/simulation/components/GuiInterface.js
+++ binaries/data/mods/public/simulation/components/GuiInterface.js
@@ -887,6 +887,9 @@
 	let buildableEnts = [];
 	for (let ent of cmd.entities)
 	{
+		if (IsOwnedByGaia(ent))
+			continue;
+
 		let cmpBuilder = Engine.QueryInterface(ent, IID_Builder);
 		if (!cmpBuilder)
 			continue;