diff --git a/lib_com/options.h b/lib_com/options.h
index 3fb633b7fd6528afdaed380799a98ace41c3fb00..ae0d5eb988795576b950e05d45734faf5223f37a 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -113,6 +113,8 @@
 
 #define CR_2109_to_2112_cd0_ce0  /* This is related to the CRs include in the 26.444 package of 21-12. Concerns lead_deindexing and  */
 
+#define FIX_ISSUE_723_INFO_TCX_NOISE /*FhG: Issue 723: fix for IGF that introduces wrong noise filling behavion*/
+
 /* ##################### End NON-BE switches ########################### */
 
 /* ################## End DEVELOPMENT switches ######################### */
diff --git a/lib_dec/dec_tcx_fx.c b/lib_dec/dec_tcx_fx.c
index 9f19d4396073bc7f90ce2e3b202bf990d096f65e..1e729c7d907f67d4402001ea5b5a89e484dce468 100644
--- a/lib_dec/dec_tcx_fx.c
+++ b/lib_dec/dec_tcx_fx.c
@@ -4354,6 +4354,7 @@ void decoder_tcx_noisefilling_fx(
         }
 
         pInfoTCXNoise = NULL;
+#ifndef FIX_ISSUE_723_INFO_TCX_NOISE
         Word16 tmp_infoTCXNoiseBuf[IGF_START_MX];
         if ( st->igf )
         {
@@ -4364,15 +4365,28 @@ void decoder_tcx_noisefilling_fx(
             pInfoTCXNoise = tmp_infoTCXNoiseBuf;
             move16();
         }
+#else
+        if ( st->igf )
+        {
+            pInfoTCXNoise = st->hIGFDec->infoTCXNoise_evs;
+            move16();
+        }
+#endif
         tcx_noise_filling_with_shift( x, x_e, nf_seed, firstLine, noiseFillingSize, noiseTransWidth, L_frame, noiseTiltFactor, fac_ns, pInfoTCXNoise, st->element_mode );
+
+#ifndef FIX_ISSUE_723_INFO_TCX_NOISE
         if ( pInfoTCXNoise )
         {
             for ( int j = 0; j < IGF_START_MX; j++ )
             {
+#ifndef FIX_ISSUE_723_INFO_TCX_NOISE
                 st->hIGFDec->infoTCXNoise[j] = (UWord8) tmp_infoTCXNoiseBuf[j];
+#else
+                st->hIGFDec->infoTCXNoise_evs[j] = (UWord8) tmp_infoTCXNoiseBuf[j];
+#endif
             }
         }
-
+#endif
         st->seed_tcx_plc = nf_seed;
         move16();
     }
diff --git a/lib_dec/ivas_mc_param_dec.c b/lib_dec/ivas_mc_param_dec.c
index 23f2cbeb96a66d27a2b08043501d37b3ad55c338..c57ddaac46cfe1675583e0b9d6d3a66b6b6136c6 100644
--- a/lib_dec/ivas_mc_param_dec.c
+++ b/lib_dec/ivas_mc_param_dec.c
@@ -471,7 +471,7 @@ ivas_error ivas_param_mc_dec_open(
 
     /* output synthesis */
 #ifdef IVAS_FLOAT_FIXED
-    floatToFixed_arrL( proto_matrix, proto_matrix_fx ,Q30,64);
+    floatToFixed_arrL( proto_matrix, proto_matrix_fx, Q30, MAX_CICP_CHANNELS * PARAM_MC_MAX_TRANSPORT_CHANS );
     if ( ( error = ivas_dirac_dec_output_synthesis_cov_open_fx( &( hParamMC->h_output_synthesis_params ), &( hParamMC->h_output_synthesis_cov_state ), hParamMC->max_band_decorr, PARAM_MC_MAX_NSLOTS,                  hParamMC->hMetadataPMC->num_parameter_bands, max_param_band_residual, nchan_transport, nchan_out_cov, proto_matrix_fx ) ) != IVAS_ERR_OK )
     {
         return error;