[10.14.4] Wifi locked SystemUIServer

Sometimes I wake up me Mac, the wireless network is not connected to my iPhone personal hot-spot, so I click the Wi-Fi icon and select my personal hot-spot, then the cursor become waiting state, and the whole top bar become freeze.

I found the SystemUIServer process become Not Responding state via ActivityMonitor, and if I open System Preference > Network > Wi-Fi, the com.apple.preference.network.remoteservice will become Not Responding state, too.

What I have tried:

1. reset SMC and Parm ----> reproduce
2. create another network location ----> reproduce
3. delete some plist files ----> reproduce
4. create another account and use for few hours ----> reproduce
5. safe mode ----> can't reproduce since safe mode is very slow and I can't wait for the issue reproduce

My MacOS:

1. Version 10.14.4 (18E226)
2. MacBook Pro (15-inch, 2018)

Similar post: https://discussions.apple.com/thread/7916642

I want to know how to debug this issue, because I can't find any useful logs from /var/log/*