The only confusing thing is that I get the message, even when I just want to look at notifications and don't need to sign anything. So, the message pops up, while I'm just passively reading stuff.
Discussion
Jumble signs an event to record the time you read notifications, which helps keep that read time synced across your devices.
It looks like supporting multiple accounts in the extension might be causing some unexpected behavior. Which extension are you using? I’d like to check whether it offers a way to notify clients when the account has been switched.