fix: potential solution for #315

Author: MichaelHillcox

CHANGELOG.md

@@ -1,3 +1,9 @@
+## [21.6.3]
+
+### Fixed
+
+- Potential crash when rendering blocks that are broken.
+
 ## [21.6.2]
 
 ### Fixed

common/src/main/java/pro/mikey/xray/core/OutlineRender.java

@@ -84,7 +84,10 @@ public static void renderBlocks(PoseStack poseStack) {
 
 				var opacity = 1F;
 
-				for (var blockProps : blocksWithProps) {
+				// More concurrent modification exceptions can happen here, so we clone the list
+				var blockPropsClone = new ArrayList<>(blocksWithProps);
+
+				for (var blockProps : blockPropsClone) {
 					if (blockProps == null) {
 						continue;
 					}

gradle.properties

@@ -11,7 +11,7 @@ parchment_minecraft_version=1.21.4
 parchment_mappings_version=2025.03.23
 
 mod_id=xray
-mod_version=21.6.2
+mod_version=21.6.3
 minecraft_version=1.21.6
 minecraft_version_range=[%base],1.21.9