VoWiFi - WiFi Calling does not work

Expected Behavior

VoWiFi - WiFi Calling work fine

Current Behavior

VoWiFi Enabled. If phone connected to WiFi then VoWiFi does not work.

Possible Solution

Fix it

Steps to Reproduce

1. Enable VoWiFi function
2. Go to Flight mode
3. Try calling someone
4. Dialer doesn't call.

/device polaris /version lineage-18.1 /date 2022-01-28 /kernel 4.9.297-perf-gf9e515877b78 /baseband 4.0.c2.6-00335-0803_2229_3c8fca6 /mods Google Apps

I have read the directions.