diff --git a/AMBuilder b/AMBuilder
index 500d4cc23..70e3af876 100644
--- a/AMBuilder
+++ b/AMBuilder
@@ -71,6 +71,7 @@ for sdk_target in MMSPlugin.sdk_targets:
 
   protoc_builder = builder.tools.Protoc(protoc = sdk_target.protoc, sources = [
     os.path.join(sdk['path'], 'common', 'network_connection.proto'),
+    os.path.join(sdk['path'], 'common', 'valveextensions.proto'),
     os.path.join(sdk['path'], 'common', 'networkbasetypes.proto'),
     os.path.join(sdk['path'], 'common', 'engine_gcmessages.proto'),
     os.path.join(sdk['path'], 'gcsdk', 'steammessages.proto'),
diff --git a/gamedata/cs2fixes.games.txt b/gamedata/cs2fixes.games.txt
index f81bdf08a..bb93aef51 100644
--- a/gamedata/cs2fixes.games.txt
+++ b/gamedata/cs2fixes.games.txt
@@ -115,7 +115,7 @@
 			{
 				"library"		"server"
 				"windows"		"\x0F\x84\x2A\x2A\x2A\x2A\x80\xB8\x2A\x2A\x2A\x2A\x00\x0F\x84\x2A\x2A\x2A\x2A\x80\x3D\x2A\x2A\x2A\x2A\x00\x74\x15"
-				"linux"			"\x0F\x84\x2A\x2A\x2A\x2A\x44\x0F\xB6\xB0\x2A\x2A\x2A\x2A\x45\x84\xF6\x0F\x84"
+				"linux"			"\x0F\x84\x2A\x2A\x2A\x2A\x44\x0F\xB6\xB8\x2A\x2A\x2A\x2A\x45\x84\xFF\x0F\x84"
 			}
 			// Called right after this in windows "Entity %s(%s) is ambiguously parented to..."
 			"CBaseEntity_SetParent"
@@ -338,7 +338,7 @@
 			"BotNavIgnore"
 			{
 				"windows"		"\xE9\x2C\x00\x00\x00\x90"
-				"linux"			"\xE9\x25\x00\x00\x00\x90"
+				"linux"			"\xE9\x22\x00\x00\x00\x90"
 			}
 		}
 	}
diff --git a/sdk b/sdk
index 0df1f3b8e..5f891c902 160000
--- a/sdk
+++ b/sdk
@@ -1 +1 @@
-Subproject commit 0df1f3b8e39a47b8840f5d5545ef5de37761683c
+Subproject commit 5f891c9026230cce0fc0a3fc4b5fef1c467a1385
diff --git a/src/detours.cpp b/src/detours.cpp
index 2980b369f..b48eb7dd6 100644
--- a/src/detours.cpp
+++ b/src/detours.cpp
@@ -169,8 +169,11 @@ void* FASTCALL Detour_ProcessUsercmds(CCSPlayerController* pController, CUserCmd
 		{
 			uint64 button = iterator->button();
 
-			// Remove normal subtick movement inputs by button & subtick movement viewangles by pitch/yaw
-			if ((button >= IN_JUMP && button <= IN_MOVERIGHT && button != IN_USE) || iterator->pitch_delta() != 0.0f || iterator->yaw_delta() != 0.0f)
+			// Remove normal subtick movement inputs by button & subtick movement viewangles by pitch/yaw.
+			// IN_JUMP is exempt: since the CS2 Season 5 jump rework (buffered jump presses), a mousewheel
+			// +jump press exists only in the subtick moves — stripping it clips/eats scroll jumps entirely,
+			// while held space survives in the tick-boundary button state.
+			if ((button > IN_JUMP && button <= IN_MOVERIGHT && button != IN_USE) || iterator->pitch_delta() != 0.0f || iterator->yaw_delta() != 0.0f)
 				subtickMoves->erase(iterator);
 			else
 				iterator++;