I updated to 107.4 today, and now i have to wait 15 minutes everytime i restart Home Assistant.
The first log entry after the 15 minutes is: [homeassistant.components.cloud.account_link] Timeout fetching tokens for flow cc6f391b466a4afcbf526d0129065f7e
I tried signing out of of my cloud account, and removing Cloud: from my conf.yaml: no effect.