resource iosxe_snmp_server attribute source_interface_traps_vlan not read after apply

[sthoneder]

When using resource iosxe_snmp_server, the configuration is applied. However on subsequent run, terraform again wants to add attribute source_interface_traps_vlan.

Using C9300 17.9.4a provider[registry.terraform.io/ciscodevnet/iosxe] >= 0.5.5 provider[registry.terraform.io/netascode/utils] >= 0.2.4

Existing device configuration

switch-terra#show run | i snmp-server trap-source
snmp-server trap-source Vlan10

terraform subsequent apply output

 # iosxe_snmp_server.snmp_config will be updated in-place
  ~ resource "iosxe_snmp_server" "snmp_config" {
      + enable_traps_power_ethernet_group            = "1"
        id                                           = "Cisco-IOS-XE-native:native/snmp-server"
      + source_interface_traps_vlan                  = 10
        # (113 unchanged attributes hidden)
    }

Resource definition

 resource "iosxe_snmp_server" "snmp_config" {

   ...
    system_shutdown                         = true
    source_interface_traps_vlan = "10"
...
enable_traps_energywise = true
    enable_traps_power_ethernet_group = "1"
    enable_traps_power_ethernet_police = true
...
}