I see. This never occurred in my mobile playthrough. What phone do you use? Are you sure you don't hit the return button? How does this error appear? Is there any pattern tied to specific actions or maps?
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Well, to fix something I first need to see and understand it. I tried to test this problem out on 4 different devices and this problem didn't occur. Also, the mobile version has a long history - more than 2 years and this is the first time I heard about this.
It's very hard to track something without a sequence to reproduce the problem. It can be tied to your device's setup, other software and a pack of other possibilities. As a solo developer, I can't cover all of these.