| 1 | initial version |
The main window geometry parameters are stored in the recent_common file, but currently they can't be set like other options that are stored in the preferences file. You would have to edit the recent_common file itself for the change to take effect.
If you'd like the main window geometry (or other) parameters to be configurable as a Wireshark option, you could file a Wireshark enhancement bug report asking for this to be implemented.