Unfortunately it goes back to 143.x in 24 hours to me. I had to install the webview beta and disable the ServiceWorkerAutoPreload as noted in the github relevant section.
There’s another workaround over on GitHub.
You might check your dev settings before tracking down a beta version as mine (GrapheneOS/Vanadium WebView 143.0.7499.109.0) had the flag available. All I did was disable it yesterday and it seems to be doing the trick so far.
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Latest webview version 143.0.7499.34 seems to have fixed the issue.
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Didn’t for me, I’m on webview 143.0.7499.34 and the issue is still there
nevermind, restarted the phone and the issue is gone 
You need to force stop HA app to make it use the new webview. A reboot works too. 
Same here, except mine gave me version 143.0.7499.146.0. Glad that is fixed!
Just wanted to chime in, same problem here using split DNS setup.
Hey !
Anyone still having this issue ?
I tried everything in this forum but nothing worked…
When I load the mobile app, it shows me “Unable to connect to Home Assistant.”
Then I reload a bunch of times until it shows refresh external url, ans it works
Very strange
I think this got fixed with an update to chromium WebView. There’s notes about it above. Also there was a flag to got switch if you don’t have the updated version.