It is possible that the issue you are experiencing with your Ledger Nano S is a bug. To troubleshoot this issue, it is recommended to try closing and reopening your Ledger device. If this does not resolve the issue, then you may want to consider resetting your device to factory settings. This can be done by pressing the right button on your device while powering it on. Additionally, you may want to consider updating the firmware on your device to the latest version, as this can help to resolve any issues that may be related to a bug. If none of these steps resolve the issue, then you may want to contact Ledger support for further assistance.