Staying-revealed fields get concealed on holding Ctrl+Alt.

Hello jinux_go, thanks for your message.

Revealing a field through the right-click context menu is temporary and fields revealed in the way will automatically revert to concealed while switching between items. This is intended behaviour and is dependent on the settings located in the Settings menu (Ctrl + Comma) > Security > Concealed Fields. There you'll find two different options you can set:
* Always show passwords and full credit card numbers
* Hold Ctrl + Alt to toggle revealed fields

Please let us know if you have any further questions or concerns.