Operating System

Windows 11 Pro - 64 bit, using the latest build: https://github.com/mqtt-viewer/mqtt-viewer/releases/tag/v0.6.2-beta1

Description

I cannot add certificates to a secure mqtt connection:
When adding/editing a connection, selecting mqtts as protocol and setting Use custom certificates I should be able to add my own certificates. However, when clicking any of the 3 buttons for that (i.e. Add CS certificate, Add client certificate and Add client key), the application exits.

Reproduction steps

1. Create a new or edit an existing connection.
2. Select mqtts as protocol
3. Fill the relevant connection details
4. Enable Use custom certificates
5. Click any of the 3 buttons: Add CS certificate, Add client certificate and Add client key

Screenshots