When standing inside of underground tunnels players can still teleport and when standing behind launch site buildings as well. In the first image i cancelled the teleport myself, but yeah all these locations are not blocked when they should be. I do not have any bypass permissions on this test account. 
I have these settings.
"Interrupt TP": {
"Interrupt Teleport At Specific Monuments": [
"Underwater Lab",
"Train Tunnel",
"Launch Site"
],
"Monument": true,
"Ignore Monument Marker Prefab": false,
"Default Monument Size": 50.0,
"Use Monument Topology Check": true,