I just draw in the app and it crashes for me as soon as I do that. I don't know why it happens but it started as soon as I downloaded the newer version. Also, thank you for helping me about the ref images!
Sorry for the trouble caused. It crashes in version 0.11.3, but not the previous version you were using? If it's easy for you, we would appreciate if you could send us Pixelorama's log files (you can see how to find them here https://www.oramainteractive.com/Pixelorama-Docs/troubleshooting#pixelorama-cras...), in case the crashes output an error message.