Bug with non overlapping multisources

pan="https://minio-api-dinamis.apps.okd.crocc.meso.umontpellier.fr/catalog/spot67/SPOT7_MS_202207121015304_SPOT7_P_202207121015304/COG_SPOT7_P_202207121015304_ORT_SPOT7_20220713_1331561rgekx3ul1x1g_1.tif"

xs="https://minio-api-dinamis.apps.okd.crocc.meso.umontpellier.fr/catalog/spot67/SPOT7_MS_202207121015304_SPOT7_P_202207121015304/COG_SPOT7_MS_202207121015304_ORT_SPOT7_20220713_1331511awwhqclkre47_1.tif"

• rf 64
• rf 16
• ef 32
• spcsc 1