I've had similar with Chromium on Ubuntu Studio 20.04. It usually connects fine the first time but if I keep disconnecting and reconnecting it starts to misbehave and struggle to connect. Shutting down Chromium and leaving it for a while seems to help. I do have quite an old laptop, mind, so could be a dodgy Bluetooth. Never get those issues on Android or my work Windows machine.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
I've had similar with Chromium on Ubuntu Studio 20.04. It usually connects fine the first time but if I keep disconnecting and reconnecting it starts to misbehave and struggle to connect. Shutting down Chromium and leaving it for a while seems to help. I do have quite an old laptop, mind, so could be a dodgy Bluetooth. Never get those issues on Android or my work Windows machine.