Hi there @Jephrito
Though this does sound a tad strange, I'd like you to try a Soft Reset on the phone, as this tends to fix a lot of minor bugs, without deleting any personal data. You can do this by holding the Power and Volume Down buttons for around 10 seconds.
If it is a software issue, it would be best to send an error report log to our software engineers, as they'll be able to decipher the issue. Please head into the Samsung Members app > Get help > Error reports. Within 15 minutes of the issue occurring, send an error report, alongside a detailed entry of the issue, so our engineers can look into this further. Once they find a fix, they'll get back in touch.