[Observium] Strange VLAN ID's 4096 + 4097 with VMWare ESX Hosts

Observium 23.9.13005 Community Edition

shows under PORTS --> VLANs two VLAN which are out of IEEE 802.1Q Range (0-4095)

VLAN ID VLAN Name 4096 vlan4096 31 4097 VLAN 4097

after klicking on the VLAN Names it shows for both VLAN-Names all LAN Connects of our VMWare ESXi Hosts

we got 2 older ESXi Hosts (v6 level) and 4 new ESXi Hosts (v8 level)

an of course NO ESXi has a VLAN ID 4096/4097

Is this some kind of misinterpretation?