Swipe spacebar to change language needs modifying to prevent accidental switches

This drives me insane on my Android devices. I want to have both Thai and English, BUT the tiniest side movement when pressing spacebar to insert a space switches language. This happens to me incredibly often, so often that I have had to simply go back to one language and reactivate Thai language only when needed - not a great solution!  If I didn't love so much else about Swiftkey I would uninstall it, but it is great for me in every other way...
PLEASE add an option so that the spacebar MUST be long pressed and swiped to change language (or any other method of switching that wouldn't happen twice during every message that I write!). Slight sideswipe is just far too easy to do by accident.
Thank you,
Kevin