VoWiFi issue on zenfone 5z

Settings on my phone
VoLTE : ON
Wi-Fi Calling: ON
Calling Preference: Call Over WiFi
Roaming Preference: Wi-Fi
Issue: When wifi on the phone is off the phone correctly shifts my calls to VoLTE. But many times when I connect back to WiFi it does not automatically shift back to VoWiFi. Even if I try to manually toggle the WiFi calling off and on again, it still remains on VoLTE. I have to turn off VoLTE in settings and turn on VoWiFi for VoWiFi to get working.
Once I get it working, I can turn VoLTE on and it works as intended (Remains on VoWiFi when connected to WiFi and shifts back to VoLTE when I disconnect from WiFi) The issue seems to occur randomly.
I am currently running WW_100.10.107.110_20201118
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Have a look at this thread you will get your answer 👇
Thanks!
Hey Debashish, Thank you for your response. I went through the thread, and basically restarting the phone is the only solution that we have about the issue right?
No, You can simply toggle Airplane mode :)
Oh I thought that's for when VoLTE not working.