Closing one of the log views (history or debug log) via the window's close control destroys the widgets in the dialog. Re-opening it causes opening a dialog window without rendering the contents (on my system the window contents stay black).

This issue was introduced when persistent log view dialogs where added in https://github.com/metabrainz/picard/commit/3f2f0f32b2f1452cb2f6ecb660c0c01359f864ce