Checklist

• I am using the latest version - 1.4.1
• [] I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• [] This issue contains only one bug. I will open one issue for every bug report I want to file.

Steps to reproduce the bug

Actual behaviour

App force closed when "0" is pressed or holded for a while.

Expected behavior

Expected to show "+" when "0" is press-hold.

Screenshots/Screen recordings

Logs

Device info

• Android version/Custom ROM version:
• ColorOS 7 (Android 10)
• Device model: RMX2185