Never happened to me with the Bitcredit Protocol eBills PWA, either. And we a bunch of them in parallel: Testnet, Staging, Mainnet Stealth. All neat and working fine.

Interesting, maybe OS dependent. Have around me mainly Ubuntu/Zorin (moreover Ubuntu) - Chromium and Ungoogled chromium. On multiple devices this is still happening - today YouTube vanished, that's why I remembered. It's not every month; in total several times per year for sure.