Hi. I really like SwiftKey, I've been using it for 10 years. I like how it is design to optimize the writing speed in spite of human errors.
I'm going to report an issue that has been happening to me for years, and it's caused by human error, not by app design, but considering the concept of the app, I think this should be taken into account.
I write using the prediction bar, always, I only use the spacebar when I'm writing a new word that I don't want autocorrected. Very often while typing fast I press by mistake whatever is on the top of the prediction. It seems that the prediction bar is too short and it causes many different problems: If I'm writing in GMail, it moves the cursor to the end of the text (after the signature), if I'm on Google Sheets it makes me touch the symbols that are on the bottom of the screen, and in other apps it opens the sticker list.
I tried changing the size of the keyboard and it helps, but my problem is not with the size of the keys but with the size of the prediction bar. I would like to have an option to make the prediction bar taller without affecting the size of the keys. Another idea would be to add a small space on top of the keyboard. This could all be optional.
I also tried forcing myself to not tap so high, but after literally a decade of repeating the problem I'm contacting you for help.