diff --git a/.github/workflows/gradle.yml b/.github/workflows/gradle.yml
deleted file mode 100644
index 6f3057225..000000000
--- a/.github/workflows/gradle.yml
+++ /dev/null
@@ -1,26 +0,0 @@
-# This workflow will build a Java project with Gradle
-# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
-name: Java CI with Gradle
-
-on:
-  push:
-    branches: [ mc1.15/dev ]
-  pull_request:
-    branches: [ mc1.15/dev ]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-    - name: Grant execute permission for gradlew
-      run: chmod +x gradlew
-    - name: Build with Gradle
-      run: ./gradlew build
diff --git a/src/generated/resources/.cache/cache b/src/generated/resources/.cache/cache
index 3dd959ef5..bc1f5d466 100644
--- a/src/generated/resources/.cache/cache
+++ b/src/generated/resources/.cache/cache
@@ -5702,7 +5702,7 @@ cc82188fe8d986f4457301ed4f75ae833d263601 data/forge/tags/items/nuggets/brass.jso
 6eec92869baa44d3ac53aec6a7a92c15147b59f0 data/forge/tags/items/ores/zinc.json
 9fc688d8fac1033c7b8f4b8de1138e56d2faf527 data/forge/tags/items/ores_in_ground/deepslate.json
 d5ea262a0f5fb210612d22521818e26cf08e591a data/forge/tags/items/ores_in_ground/stone.json
-5d5ec04a61ff2b1ad19210e2859a9c96cc246ef8 data/forge/tags/items/plates.json
+e32b78851bc4fce0745d8b72c85cbd4e89e8c221 data/forge/tags/items/plates.json
 39f0d70ec10597e85df7c4783bbc5e0e4a5ffb80 data/forge/tags/items/plates/brass.json
 c3dab5fe379bc1b7b10d4a0ba7009eee1b75a27c data/forge/tags/items/plates/copper.json
 fb9bfb4c84ed9cf2da8c4b2fbc4cd4d9f37d3016 data/forge/tags/items/plates/gold.json
diff --git a/src/generated/resources/data/forge/tags/items/plates.json b/src/generated/resources/data/forge/tags/items/plates.json
index c294488df..f07ec2353 100644
--- a/src/generated/resources/data/forge/tags/items/plates.json
+++ b/src/generated/resources/data/forge/tags/items/plates.json
@@ -1,6 +1,7 @@
 {
   "replace": false,
   "values": [
+    "create:sturdy_sheet",
     "create:copper_sheet",
     "create:brass_sheet",
     "create:iron_sheet",
diff --git a/src/main/java/com/simibubi/create/AllItems.java b/src/main/java/com/simibubi/create/AllItems.java
index e6e6cf473..ad474e17c 100644
--- a/src/main/java/com/simibubi/create/AllItems.java
+++ b/src/main/java/com/simibubi/create/AllItems.java
@@ -85,7 +85,7 @@ public class AllItems {
 		DOUGH = taggedIngredient("dough", forgeItemTag("dough"), forgeItemTag("dough/wheat")),
 		CINDER_FLOUR = ingredient("cinder_flour"), ROSE_QUARTZ = ingredient("rose_quartz"),
 		POLISHED_ROSE_QUARTZ = ingredient("polished_rose_quartz"), POWDERED_OBSIDIAN = ingredient("powdered_obsidian"),
-		STURDY_SHEET = taggedIngredient("sturdy_sheet", forgeItemTag("plates/obsidian")),
+		STURDY_SHEET = taggedIngredient("sturdy_sheet", forgeItemTag("plates/obsidian"), PLATES.tag),
 		PROPELLER = ingredient("propeller"), WHISK = ingredient("whisk"), BRASS_HAND = ingredient("brass_hand"),
 		CRAFTER_SLOT_COVER = ingredient("crafter_slot_cover"), ELECTRON_TUBE = ingredient("electron_tube");
 
diff --git a/src/main/java/com/simibubi/create/content/curiosities/toolbox/ToolboxHandlerClient.java b/src/main/java/com/simibubi/create/content/curiosities/toolbox/ToolboxHandlerClient.java
index a4c61f2fc..644aa7fc5 100644
--- a/src/main/java/com/simibubi/create/content/curiosities/toolbox/ToolboxHandlerClient.java
+++ b/src/main/java/com/simibubi/create/content/curiosities/toolbox/ToolboxHandlerClient.java
@@ -157,7 +157,7 @@ public class ToolboxHandlerClient {
 
 	public static void renderOverlay(ForgeIngameGui gui, PoseStack poseStack, float partialTicks, int width, int height) {
 		Minecraft mc = Minecraft.getInstance();
-		if (mc.options.hideGui)
+		if (mc.options.hideGui || mc.gameMode.getPlayerMode() == GameType.SPECTATOR)
 			return;
 
 		int x = width / 2 - 90;
diff --git a/src/main/java/com/simibubi/create/events/ClientEvents.java b/src/main/java/com/simibubi/create/events/ClientEvents.java
index 8ff0941e4..e3830192a 100644
--- a/src/main/java/com/simibubi/create/events/ClientEvents.java
+++ b/src/main/java/com/simibubi/create/events/ClientEvents.java
@@ -83,7 +83,6 @@ import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.client.ConfigGuiHandler;
 import net.minecraftforge.client.event.ClientPlayerNetworkEvent;
-import net.minecraftforge.client.event.DrawSelectionEvent;
 import net.minecraftforge.client.event.EntityRenderersEvent;
 import net.minecraftforge.client.event.EntityViewRenderEvent;
 import net.minecraftforge.client.event.RegisterClientReloadListenersEvent;
@@ -173,9 +172,6 @@ public class ClientEvents {
 		TrainHUD.tick();
 	}
 
-	@SubscribeEvent
-	public static void onRenderSelection(DrawSelectionEvent event) {}
-
 	@SubscribeEvent
 	public static void onJoin(ClientPlayerNetworkEvent.LoggedInEvent event) {
 		CreateClient.checkGraphicsFanciness();