The screen overlay feature can cause quite a bit of trouble for users. If not necessary, you can turn it off.
Steps to disable screen overlay on HTC 10 EVO are as follows:
Step 1: Navigate to the app settings.
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Step 2: Select the app configuration.
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Step 3: Choose special access.
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Step 4: Opt for the app and disable it.

That completes the setup. Wishing you all success.