I was signing into a new app account when the screen locked and my on screen keyboard vanished.
I rebooted my S21 Ultra but still no keyboard appeared when I would tap on my Google search bar. Nothing.
I received a message that Google had stopped working. I'm now getting a little panicky. I eventually go to Settings / Apps / Google and press Force Stop.
That brings back the keyboard, but it's the Samsung keyboard and not the MS SwiftKey keyboard that I use and prefer.
Long story short, it would seem there was a very recent update to the MS SwiftKey Beta keyboard and that update must have installed at that time.
At any rate, if this happens to anyone else, going to Settings / Apps and performing a Force Stop might be a good way to help solve an issue.
Just passin' this on.
Galaxy S23 Ultra / 512 GB / Microsoft Launcher / Samsung Silicone case