I can confirm that.
Only issue is that if you move focus to another application, for example discord, and then back to the game, you lose the ability to move with the keyboard.
Oh I see. Sorry to hear. There's no plans for the linux port afaik. The developer that does the coding doesn't know much about linux from what i remember. Same issue with Mac, they don't own a Mac to do the testing. Reason why it's even on IOS would that one of the other devs owns an Iphone 6+ so they test it on that. but anyone with an Iphone 5s (due to the difference between IOS) causes issues. Basically they don't have the equipment to get the game on a wide variety of ports. But we'll see how things go moving forward. Who knows. Hopefully they can hire someone who can do it for them to cover Mac and linux. We can only hope for the best.