I have spent 15 minutes figuring out why my javascript code didn't update to the last save when reloading the website before realising it was loading from the cache. It's 1am right now.
As Jamie once said, arghhhhhhhhhhhhhh
Android System webview has stopped, followed by Messages, then Process system did not respond...
Just because of 1 lightning app ?!
I had to adb reboot !