This is a problem I run into very often with the itch.io client. It's perfect, but the autocorrect doesn't work. Or, there just is no autocorrect. The red underline indicating a typo, but when you right click on it, a drop-down menu appears, but no autocorrect! It's only Cut, Copy, and Paste.

Now, I could just learn to spell and/or type better, but that's too tedious and it wouldn't be technology if I couldn't do everything without needing to put any effort into anything. 

I'm sure Google has some autocorrect/spell check API the itch.io devs could some how implement into the text editor, and if they did, that would be so helpful!