[BUG] "Set Encryption Key" dialog cannot be closed via dialog close ("X") button

[wavebit]

System information

Windows 10.0.19045, Intel(R) HD Graphics 530, vulkan

Issue description

GDRE Tools Version v2.6.4
When the "Set Encryption Key" dialog is open, clicking the dialog frame close ("X") button has no effect and fails to close the dialog. Can only dismiss the dialog by clicking the "Cancel" or "OK" buttons inside the window.

Steps to reproduce

No response

Recovery log

N/A

Link to game download

N/A