diff --git a/docs/drivers/kosmickrisp/workarounds.rst b/docs/drivers/kosmickrisp/workarounds.rst
index 7a5f725ff81..85ee8ce14a6 100644
--- a/docs/drivers/kosmickrisp/workarounds.rst
+++ b/docs/drivers/kosmickrisp/workarounds.rst
@@ -49,6 +49,39 @@ info on what was updated.
 Workarounds
 ===========
 
+KK_WORKAROUND_9
+---------------
+| macOS version: 26.4.1
+| Metal ticket: Not reported
+| Metal ticket status:
+| CTS test failure: ``dEQP-VK.reconvergence.maximal.compute.nesting*``
+| Comments:
+
+Metal seems to re-order the sole break case of a loop such that execution
+reconverges earlier than expected.
+
+From the above mentioned CTS test, consider the following, which is the
+only code path that breaks within a loop:
+
+.. code-block:: c
+
+   if (subgroupElect()) {
+      outputC.loc[gl_LocalInvocationIndex]++;
+      outputB.b[(outLoc++)*invocationStride + gl_LocalInvocationIndex] =
+         subgroupBallot(true);
+      break;
+   }
+
+The test expects the ``subgroupBallot`` to yield just one bit set for the
+thread picked by ``subgroupElect``; however, Metal returns the full 0xFFFFFFFF,
+presumably because it re-ordered the operations to after the loop.
+
+To work around this, we add a trivial, always-true runtime condition to the
+break to ensure that the prior logic is not re-ordered.
+
+| Log:
+| 2026-04-27: Workaround implemented
+
 KK_WORKAROUND_7
 ---------------
 | macOS version: 26.0.1
diff --git a/src/kosmickrisp/compiler/nir_to_msl.c b/src/kosmickrisp/compiler/nir_to_msl.c
index 66c32e48288..ca9a40c02ee 100644
--- a/src/kosmickrisp/compiler/nir_to_msl.c
+++ b/src/kosmickrisp/compiler/nir_to_msl.c
@@ -1809,7 +1809,13 @@ jump_instr_to_msl(struct nir_to_msl_ctx *ctx, nir_jump_instr *jump)
       assert(!"Unimplemented");
       break;
    case nir_jump_break:
-      P_IND(ctx, "break;\n");
+      /* KK_WORKAROUND_9 */
+      if (!ctx->shader->info.maximally_reconverges ||
+          (ctx->disabled_workarounds & BITFIELD64_BIT(9))) {
+         P_IND(ctx, "break;\n");
+      } else {
+         P_IND(ctx, "if ((ulong)simd_active_threads_mask()) break;\n");
+      }
       break;
    case nir_jump_continue:
       P_IND(ctx, "continue;\n");
diff --git a/src/kosmickrisp/vulkan/kk_physical_device.c b/src/kosmickrisp/vulkan/kk_physical_device.c
index fe1ced261c7..91a32a2bbaa 100644
--- a/src/kosmickrisp/vulkan/kk_physical_device.c
+++ b/src/kosmickrisp/vulkan/kk_physical_device.c
@@ -123,9 +123,7 @@ kk_get_device_extensions(const struct kk_instance *instance,
 
       /* Optional extensions */
       .KHR_calibrated_timestamps = true,
-      /* Temporarily disabled due to failing tests in
-       * dEQP-VK.reconvergence.maximal.compute.nesting* */
-      .KHR_shader_maximal_reconvergence = false,
+      .KHR_shader_maximal_reconvergence = true,
       .KHR_shader_relaxed_extended_instruction = true,
       .KHR_shader_subgroup_uniform_control_flow = true,
 #ifdef KK_USE_WSI_PLATFORM
@@ -287,9 +285,7 @@ kk_get_device_features(
       .shaderExpectAssume = true,
 
       /* VK_KHR_shader_maximal_reconvergence */
-      /* Temporarily disabled due to failing tests in
-       * dEQP-VK.reconvergence.maximal.compute.nesting* */
-      .shaderMaximalReconvergence = false,
+      .shaderMaximalReconvergence = true,
 
       /* VK_KHR_shader_relaxed_extended_instruction */
       .shaderRelaxedExtendedInstruction = true,