Comment 2 for bug 672394

Fixed in https://github.com/jpobst/Pinta/commit/133233fcf3aca0a947d849e6f6f9b05104563bf6.

The issue is that the History panel takes the focus, so the text tool never receives any key presses. Clicking back in the canvas to place your cursor will now grab the focus back, so you can type again.

Thanks for the report!