The Signal messenger and protocol.

Despite being on the latest update, very often I've been seeing Signal crash right after sending a message. It's not after every single message, but often enough, it just sends me back to the home screen. After crashing enough times, my phone automatically suggests cache-cleaning, which I then follow the prompt for, but which doesn't seem to fix things for long. I've never seen this error before and am wondering if it's just me or if others have seen this as well as of late.